amdgpu/nv.c - Added codec query for Beige Goby

Added the Beige Goby capabilities in codec query.

v2: fix build error and indent (James)

Signed-off-by: Veerabadhran Gopalakrishnan <veerabadhran.gopalakrishnan@amd.com>
Reviewed-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Leo Liu <leo.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>