drm/radeon: add hawaii dpm support

This updates the CI dpm (dynamic power management)
support for hawaii.

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

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

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

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