pp_dpm_sclk/pp_dpm_mclk in sysfs implemented to force
gfxclk/uclk dpm level for Vega12
Signed-off-by: NKenneth Feng <kenneth.feng@amd.com>
Reviewed-by: NEvan Quan <evan.quan@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>