drm/amdgpu: add ta firmware load in psp_v12_0 for renoir

It needs to load renoir_ta firmware because hdcp is enabled by default
for renoir now. This can avoid error:DTM TA is not initialized

Signed-off-by: Changfeng <Changfeng.Zhu@amd.com>
Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>