drm/amd/powerplay: enable LCLK DPM for sienna_cichlid

Enable LCLK DPM for sienna_cichlid.
Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -45,6 +45,7 @@
 	FEATURE_MASK(FEATURE_DPM_PREFETCHER_BIT) | \
 	FEATURE_MASK(FEATURE_DPM_GFXCLK_BIT)     | \
 	FEATURE_MASK(FEATURE_DPM_UCLK_BIT)	 | \
+	FEATURE_MASK(FEATURE_DPM_LINK_BIT)       | \
 	FEATURE_MASK(FEATURE_DPM_SOCCLK_BIT)     | \
 	FEATURE_MASK(FEATURE_DPM_FCLK_BIT)	 | \
 	FEATURE_MASK(FEATURE_DPM_DCEFCLK_BIT))
@@ -285,6 +286,9 @@ sienna_cichlid_get_allowed_feature_mask(struct smu_context *smu,
 	if (adev->pm.pp_feature & PP_MCLK_DPM_MASK)
 		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_UCLK_BIT);
 
+	if (adev->pm.pp_feature & PP_PCIE_DPM_MASK)
+		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_LINK_BIT);
+
 	if (adev->pm.pp_feature & PP_DCEFCLK_DPM_MASK)
 		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_DCEFCLK_BIT);