drm/amd/powerplay: add new function point in hwmgr.

BugLink: http://bugs.launchpad.net/bugs/1546572

1. for set_cpu_power_state
2. restore display configuration
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
(cherry picked from commit 73c9f222)
Signed-off-by: Alberto Milone <alberto.milone@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

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

@@ -313,6 +313,10 @@ struct pp_hwmgr_func {
 					const struct pp_hw_power_state *pstate1,
 					const struct pp_hw_power_state *pstate2,
 					bool *equal);
+	int (*set_cpu_power_state)(struct pp_hwmgr *hwmgr);
+	int (*store_cc6_data)(struct pp_hwmgr *hwmgr, uint32_t separation_time,
+				bool cc6_disable, bool pstate_disable,
+				bool pstate_switch_disable);
 };
 
 struct pp_table_func {
@@ -576,7 +580,7 @@ struct pp_hwmgr {
 	const struct pp_hwmgr_func *hwmgr_func;
 	const struct pp_table_func *pptable_func;
 	struct pp_power_state    *ps;
-        enum pp_power_source  power_source;
+	enum pp_power_source  power_source;
 	uint32_t num_ps;
 	struct pp_thermal_controller_info thermal_controller;
 	bool fan_ctrl_is_in_default_mode;