ram: rk3399: s/rk3399_base_params/sdram_base_params

Most of the ddr parameters are common in rk3399_base_params
structure and which would reuse it in another controller like
px30 in future.

So, rename the structure from rk3399_base_params into
sdram_base_params.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: YouMin Chen <cym@rock-chips.com>
Reviewed-by: Kever Yang <Kever.yang@rock-chips.com>
diff --git a/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h b/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h
index 683093d..5614b94 100644
--- a/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h
+++ b/arch/arm/include/asm/arch-rockchip/sdram_rk3399.h
@@ -96,7 +96,7 @@
 	struct rk3399_msch_timings noc_timings;
 };
 
-struct rk3399_base_params {
+struct sdram_base_params {
 	unsigned int ddr_freq;
 	unsigned int dramtype;
 	unsigned int num_channels;
@@ -106,7 +106,7 @@
 
 struct rk3399_sdram_params {
 	struct rk3399_sdram_channel ch[2];
-	struct rk3399_base_params base;
+	struct sdram_base_params base;
 	struct rk3399_ddr_pctl_regs pctl_regs;
 	struct rk3399_ddr_pi_regs pi_regs;
 	struct rk3399_ddr_publ_regs phy_regs;