backends/drm: ignore opaque formats for the cursor plane
The kernel may expose an opaque format that we normally prefer, so to prevent picking an opaque format for the cursor, filter those out.
(cherry picked from commit 4df1b3a2)
The kernel may expose an opaque format that we normally prefer, so to prevent picking an opaque format for the cursor, filter those out.
(cherry picked from commit 4df1b3a2)