drm/radeon: convert SI,CIK to use sumo_rlc functions

and remove duplicate si_rlc functions.

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

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

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

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

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

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

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

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