drm/arc: Use drm_gem_fb_create()

drm_fb_cma_create() is just a wrapper around drm_gem_fb_create() now,
so use the function directly.

Cc: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Alexey Brodkin <abrodkin@synopsys.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1502631125-13557-5-git-send-email-noralf@tronnes.org

drivers/gpu/drm/arc/arcpgu_drv.c

@@ -18,6 +18,7 @@
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_fb_cma_helper.h>
 #include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_atomic_helper.h>
 #include <linux/of_reserved_mem.h>
 
@@ -32,7 +33,7 @@ static void arcpgu_fb_output_poll_changed(struct drm_device *dev)
 }
 
 static const struct drm_mode_config_funcs arcpgu_drm_modecfg_funcs = {
-	.fb_create  = drm_fb_cma_create,
+	.fb_create  = drm_gem_fb_create,
 	.output_poll_changed = arcpgu_fb_output_poll_changed,
 	.atomic_check = drm_atomic_helper_check,
 	.atomic_commit = drm_atomic_helper_commit,