dumb_driver: add DRM_FORMAT_RGB565 scanout support

[bero@baylibre.com: Rebase to newer upstream revision]

Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
Signed-off-by: Bernhard Rosenkränzer <bero@baylibre.com>
Change-Id: I5214435b3b48263fd06f6409dfb99295df467556

dumb_driver.c

@@ -27,7 +27,8 @@
 
 static const uint32_t scanout_render_formats[] = { DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB8888,
 						   DRM_FORMAT_ABGR8888, DRM_FORMAT_XBGR8888,
-						   DRM_FORMAT_BGR888,	DRM_FORMAT_RGB565 };
+						   DRM_FORMAT_BGR888,	DRM_FORMAT_BGR565,
+						   DRM_FORMAT_RGB565 };
 
 static const uint32_t texture_only_formats[] = { DRM_FORMAT_R8, DRM_FORMAT_NV12, DRM_FORMAT_NV21,
 						 DRM_FORMAT_YVU420, DRM_FORMAT_YVU420_ANDROID };