omapdrm fix for 4.4

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Merge tag 'omapdrm-4.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux into drm-fixes

omapdrm fix for 4.4

* tag 'omapdrm-4.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
  drm/omap: fix fbdev pix format to support all platforms

drivers/gpu/drm/omapdrm/omap_fbdev.c

@@ -112,11 +112,8 @@ static int omap_fbdev_create(struct drm_fb_helper *helper,
 	dma_addr_t paddr;
 	int ret;
 
-	/* only doing ARGB32 since this is what is needed to alpha-blend
-	 * with video overlays:
-	 */
 	sizes->surface_bpp = 32;
-	sizes->surface_depth = 32;
+	sizes->surface_depth = 24;
 
 	DBG("create fbdev: %dx%d@%d (%dx%d)", sizes->surface_width,
 			sizes->surface_height, sizes->surface_bpp,