drm/radeon: add support for vce 1.0 clock gating

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --cc drivers/gpu/drm/radeon/radeon_asic.c
Simple merge

diff --cc drivers/gpu/drm/radeon/sid.h
Simple merge

diff --cc drivers/gpu/drm/radeon/vce_v1_0.c
Simple merge