rockchip/rk3399: set ddr clock source back to dpll when ddr resume

when logic power rail shutdown, CRU register will back to reset
value, ddr use abpll as clock source when do suspend, we need to save
and dpll value in pmusram, then set back these ddr clock back to dpll
when dddr resume.

Change-Id: I95dc0173649e8515859cfa46b40a606e0cc2fe3f
Signed-off-by: Lin Huang <hl@rock-chips.com>
diff --git a/plat/rockchip/rk3399/drivers/dram/suspend.h b/plat/rockchip/rk3399/drivers/dram/suspend.h
index 77f9c31..a8a8641 100644
--- a/plat/rockchip/rk3399/drivers/dram/suspend.h
+++ b/plat/rockchip/rk3399/drivers/dram/suspend.h
@@ -19,7 +19,7 @@
 #define PI_WDQ_LEVELING		(1 << 4)
 #define PI_FULL_TRAINING	(0xff)
 
-void dmc_save(void);
-__pmusramfunc void dmc_restore(void);
+void dmc_suspend(void);
+__pmusramfunc void dmc_resume(void);
 
 #endif /* __DRAM_H__ */