drm/amdgpu/soc21: Add video cap query support for VCN_4_0_5

Added the video capability query support for VCN version 4_0_5

Signed-off-by: Saleemkhan Jamadar <saleemkhan.jamadar@amd.com>
Reviewed-by: Veerabadhran Gopalakrishnan <Veerabadhran.Gopalakrishnan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>