arm: rockchip: Add common cru.h

Few of the rockchip family SoC atleast rk3288,
rk3399 are sharing some cru register bits so
adding common code between these SoC families
would require to include both cru include files
that indeed resulting function declarations error.

So, create a common cru include as cru.h then
include the rk3399 arch cru include file and move
the common cru register bit definitions into it.

The rest of rockchip cru files will add it in future.

Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
diff --git a/drivers/ram/rockchip/sdram_rk3288.c b/drivers/ram/rockchip/sdram_rk3288.c
index 3eb14cd..9f6f555 100644
--- a/drivers/ram/rockchip/sdram_rk3288.c
+++ b/drivers/ram/rockchip/sdram_rk3288.c
@@ -17,7 +17,7 @@
 #include <syscon.h>
 #include <asm/io.h>
 #include <asm/arch-rockchip/clock.h>
-#include <asm/arch-rockchip/cru_rk3288.h>
+#include <asm/arch-rockchip/cru.h>
 #include <asm/arch-rockchip/ddr_rk3288.h>
 #include <asm/arch-rockchip/grf_rk3288.h>
 #include <asm/arch-rockchip/pmu_rk3288.h>
@@ -37,7 +37,7 @@
 	struct chan_info chan[2];
 	struct ram_info info;
 	struct clk ddr_clk;
-	struct rk3288_cru *cru;
+	struct rockchip_cru *cru;
 	struct rk3288_grf *grf;
 	struct rk3288_sgrf *sgrf;
 	struct rk3288_pmu *pmu;
@@ -93,7 +93,7 @@
 	}
 }
 
-static void ddr_reset(struct rk3288_cru *cru, u32 ch, u32 ctl, u32 phy)
+static void ddr_reset(struct rockchip_cru *cru, u32 ch, u32 ctl, u32 phy)
 {
 	u32 phy_ctl_srstn_shift = 4 + 5 * ch;
 	u32 ctl_psrstn_shift = 3 + 5 * ch;
@@ -110,7 +110,7 @@
 		     phy << phy_srstn_shift);
 }
 
-static void ddr_phy_ctl_reset(struct rk3288_cru *cru, u32 ch, u32 n)
+static void ddr_phy_ctl_reset(struct rockchip_cru *cru, u32 ch, u32 n)
 {
 	u32 phy_ctl_srstn_shift = 4 + 5 * ch;
 
@@ -118,7 +118,7 @@
 		     1 << phy_ctl_srstn_shift, n << phy_ctl_srstn_shift);
 }
 
-static void phy_pctrl_reset(struct rk3288_cru *cru,
+static void phy_pctrl_reset(struct rockchip_cru *cru,
 			    struct rk3288_ddr_publ *publ,
 			    int channel)
 {