drm: move intel_lpe_audio.h under include/drm/intel

Clean up the top level include/drm directory by grouping all the Intel
specific files under a common subdirectory.

Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/2d645970a65cfd13e01fd8195b35bf9483ae9c2f.1717075103.git.jani.nikula@intel.com

drivers/gpu/drm/i915/display/intel_hdmi.c

@@ -38,7 +38,7 @@
 #include <drm/drm_atomic_helper.h>
 #include <drm/drm_crtc.h>
 #include <drm/drm_edid.h>
-#include <drm/intel_lpe_audio.h>
+#include <drm/intel/intel_lpe_audio.h>
 
 #include "g4x_hdmi.h"
 #include "i915_drv.h"

drivers/gpu/drm/i915/display/intel_lpe_audio.c

@@ -68,7 +68,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 
-#include <drm/intel_lpe_audio.h>
+#include <drm/intel/intel_lpe_audio.h>
 
 #include "i915_drv.h"
 #include "i915_irq.h"

sound/x86/intel_hdmi_audio.c

@@ -31,7 +31,7 @@
 #include <sound/jack.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_eld.h>
-#include <drm/intel_lpe_audio.h>
+#include <drm/intel/intel_lpe_audio.h>
 #include "intel_hdmi_audio.h"
 
 #define INTEL_HDMI_AUDIO_SUSPEND_DELAY_MS  5000