panfrost: Don't allow rendering/texturing 48-bit
Matches freedreno. Fixes crashes in Piglit arb_texture_view.
Signed-off-by: Alyssa Rosenzweig alyssa@collabora.com Cc: mesa-stable
Matches freedreno. Fixes crashes in Piglit arb_texture_view.
Signed-off-by: Alyssa Rosenzweig alyssa@collabora.com Cc: mesa-stable