drm/amdgpu: correct vmhub for vcn dec/enc ring

This got missed due to differences in the trees
when raven support was merged.

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: ken wang <Qingqing.Wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 file changed