drm/amd/powerplay: enable GPO

GPO is graphics power optimizer.
SMU calculates the 16 gfxclk V/F points according to the CU numbers
and memory activity.RLC picks one of them according to the memory
speed requirements for the data transmission.
Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/inc/smu_types.h

@@ -260,6 +260,7 @@ enum smu_clk_type {
        __SMU_DUMMY_MAP(MMHUB_PG),                      	\
        __SMU_DUMMY_MAP(ATHUB_PG),                      	\
        __SMU_DUMMY_MAP(APCC_DFLL),                     	\
+       __SMU_DUMMY_MAP(DPM_GFX_GPO),                    \
        __SMU_DUMMY_MAP(WAFL_CG),
 
 #undef __SMU_DUMMY_MAP

drivers/gpu/drm/amd/powerplay/sienna_cichlid_ppt.c

@@ -126,6 +126,7 @@ static struct smu_11_0_cmn2aisc_mapping sienna_cichlid_clk_map[SMU_CLK_COUNT] =
 static struct smu_11_0_cmn2aisc_mapping sienna_cichlid_feature_mask_map[SMU_FEATURE_COUNT] = {
 	FEA_MAP(DPM_PREFETCHER),
 	FEA_MAP(DPM_GFXCLK),
+	FEA_MAP(DPM_GFX_GPO),
 	FEA_MAP(DPM_UCLK),
 	FEA_MAP(DPM_SOCCLK),
 	FEA_MAP(DPM_MP0CLK),