drm: clarify scaling property names

Now that we're using the scaling property in the Intel driver I noticed
that the names were a bit confusing.  I've corrected them according to
our discussion on IRC and the mailing list, though I've left out
potential new additions for a new scaling property with an integer (or
two) for the scaling factor.  None of the drivers implement that today,
but if someone wants to do it, I think it could be done with the
addition of a single new type and a new property to describe the
scaling factor in the X and Y directions.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 362a538..39a6bc6 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -68,10 +68,10 @@
  */
 static struct drm_prop_enum_list drm_scaling_mode_enum_list[] =
 {
-	{ DRM_MODE_SCALE_NON_GPU, "Non-GPU" },
-	{ DRM_MODE_SCALE_FULLSCREEN, "Fullscreen" },
-	{ DRM_MODE_SCALE_NO_SCALE, "No scale" },
-	{ DRM_MODE_SCALE_ASPECT, "Aspect" },
+	{ DRM_MODE_SCALE_NONE, "None" },
+	{ DRM_MODE_SCALE_FULLSCREEN, "Full" },
+	{ DRM_MODE_SCALE_CENTER, "Center" },
+	{ DRM_MODE_SCALE_ASPECT, "Full aspect" },
 };
 
 static struct drm_prop_enum_list drm_dithering_mode_enum_list[] =