amd\powerplay Implement get dal power level

Implement get dal power level and simple clock info

Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
diff --git a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
index 215757e0a..0b9876d 100644
--- a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
+++ b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
@@ -619,3 +619,16 @@
 	phm_store_dal_configuration_data(hwmgr, display_config);
 	return 0;
 }
+
+int amd_powerplay_get_display_power_level(void *handle,  void *output)
+{
+	struct pp_hwmgr  *hwmgr;
+
+	if (handle == NULL || output == NULL)
+		return -EINVAL;
+
+	hwmgr = ((struct pp_instance *)handle)->hwmgr;
+
+	return phm_get_dal_power_level(hwmgr,
+			(struct pp_dal_clock_info *)output);
+}