drm/msm/mdp5: Set rotation property initial value to DRM_ROTATE_0 insted of 0

0 isn't a valid rotation property value, so let's set the initial value
of the property to DRM_ROTATE_0 instead.

In the same vein, we must always have at leat one angle as part of set
of supported rotation bits, so let's include DRM_ROTATE_0 in there.

Cc: Rob Clark <robdclark@gmail.com>
Cc: Jilai Wang <jilaiw@codeaurora.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rob Clark <robdclark@gmail.com>

drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c

@@ -78,12 +78,12 @@ static void mdp5_plane_install_rotation_property(struct drm_device *dev,
 	if (!dev->mode_config.rotation_property)
 		dev->mode_config.rotation_property =
 			drm_mode_create_rotation_property(dev,
-			DRM_REFLECT_X | DRM_REFLECT_Y);
+				DRM_ROTATE_0 | DRM_REFLECT_X | DRM_REFLECT_Y);
 
 	if (dev->mode_config.rotation_property)
 		drm_object_attach_property(&plane->base,
 			dev->mode_config.rotation_property,
-			0);
+			DRM_ROTATE_0);
 }
 
 /* helper to install properties which are common to planes and crtcs */