drm/amdgpu: make UVD handle checking more strict

Invalid messages can crash the hw otherwise

Ported from radeon commit a1b403da70e038ca6c6c6fe434d1d873546873a3

Signed-off-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
1 file changed