drm/amdgpu: add missed support for UVD IP_VERSION(3, 0, 64)

Fixes: 96b8dd44 ("drm/amdgpu/amdgpu_vcn: convert to IP version checking")
Signed-off-by: Flora Cui <flora.cui@amd.com>
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>