drm/vmwgfx/vmwgfx_overlay: Demote kernel-doc abuses to standard comment blocks

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:48: warning: cannot understand function prototype: 'struct vmw_overlay '
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:98: warning: Function parameter or member 'dev_priv' not described in 'vmw_overlay_send_put'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:98: warning: Function parameter or member 'buf' not described in 'vmw_overlay_send_put'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:98: warning: Function parameter or member 'arg' not described in 'vmw_overlay_send_put'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:98: warning: Function parameter or member 'interruptible' not described in 'vmw_overlay_send_put'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:186: warning: Function parameter or member 'dev_priv' not described in 'vmw_overlay_send_stop'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:186: warning: Function parameter or member 'stream_id' not described in 'vmw_overlay_send_stop'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:186: warning: Function parameter or member 'interruptible' not described in 'vmw_overlay_send_stop'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:228: warning: Function parameter or member 'dev_priv' not described in 'vmw_overlay_move_buffer'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:228: warning: Function parameter or member 'buf' not described in 'vmw_overlay_move_buffer'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:228: warning: Function parameter or member 'pin' not described in 'vmw_overlay_move_buffer'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:228: warning: Function parameter or member 'inter' not described in 'vmw_overlay_move_buffer'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:253: warning: Function parameter or member 'dev_priv' not described in 'vmw_overlay_stop'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:253: warning: Function parameter or member 'stream_id' not described in 'vmw_overlay_stop'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:253: warning: Function parameter or member 'pause' not described in 'vmw_overlay_stop'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:253: warning: Function parameter or member 'interruptible' not described in 'vmw_overlay_stop'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:301: warning: Function parameter or member 'dev_priv' not described in 'vmw_overlay_update_stream'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:301: warning: Function parameter or member 'buf' not described in 'vmw_overlay_update_stream'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:301: warning: Function parameter or member 'arg' not described in 'vmw_overlay_update_stream'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:301: warning: Function parameter or member 'interruptible' not described in 'vmw_overlay_update_stream'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:364: warning: Function parameter or member 'dev_priv' not described in 'vmw_overlay_resume_all'
 drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c:398: warning: Function parameter or member 'dev_priv' not described in 'vmw_overlay_pause_all'

Cc: VMware Graphics <linux-graphics-maintainer@vmware.com>
Cc: Roland Scheidegger <sroland@vmware.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Zack Rusin <zackr@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210115181313.3431493-24-lee.jones@linaro.org

drivers/gpu/drm/vmwgfx/vmwgfx_overlay.c

@@ -42,7 +42,7 @@ struct vmw_stream {
 	struct drm_vmw_control_stream_arg saved;
 };
 
-/**
+/*
  * Overlay control
  */
 struct vmw_overlay {
@@ -85,7 +85,7 @@ static inline void fill_flush(struct vmw_escape_video_flush *cmd,
 	cmd->flush.streamId = stream_id;
 }
 
-/**
+/*
  * Send put command to hw.
  *
  * Returns
@@ -174,7 +174,7 @@ static int vmw_overlay_send_put(struct vmw_private *dev_priv,
 	return 0;
 }
 
-/**
+/*
  * Send stop command to hw.
  *
  * Returns
@@ -216,7 +216,7 @@ static int vmw_overlay_send_stop(struct vmw_private *dev_priv,
 	return 0;
 }
 
-/**
+/*
  * Move a buffer to vram or gmr if @pin is set, else unpin the buffer.
  *
  * With the introduction of screen objects buffers could now be
@@ -235,7 +235,7 @@ static int vmw_overlay_move_buffer(struct vmw_private *dev_priv,
 	return vmw_bo_pin_in_vram_or_gmr(dev_priv, buf, inter);
 }
 
-/**
+/*
  * Stop or pause a stream.
  *
  * If the stream is paused the no evict flag is removed from the buffer
@@ -285,7 +285,7 @@ static int vmw_overlay_stop(struct vmw_private *dev_priv,
 	return 0;
 }
 
-/**
+/*
  * Update a stream and send any put or stop fifo commands needed.
  *
  * The caller must hold the overlay lock.
@@ -353,7 +353,7 @@ static int vmw_overlay_update_stream(struct vmw_private *dev_priv,
 	return 0;
 }
 
-/**
+/*
  * Try to resume all paused streams.
  *
  * Used by the kms code after moving a new scanout buffer to vram.
@@ -387,7 +387,7 @@ int vmw_overlay_resume_all(struct vmw_private *dev_priv)
 	return 0;
 }
 
-/**
+/*
  * Pauses all active streams.
  *
  * Used by the kms code when moving a new scanout buffer to vram.