ram: rockchip: rename sdram_common.c/h to sdram.c

rename sdram_common.c in arch/arm/mach-rockchip to sdram.c;
so that we can use the file name sdram_common.c in dram driver for
better understand the code;
clean the related file who has use the header file at the same time.

Signed-off-by: YouMin Chen <cym@rock-chips.com>
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/arch/arm/include/asm/arch-rockchip/sdram_common.h b/arch/arm/include/asm/arch-rockchip/sdram.h
similarity index 97%
rename from arch/arm/include/asm/arch-rockchip/sdram_common.h
rename to arch/arm/include/asm/arch-rockchip/sdram.h
index 8027b53..f3933f3 100644
--- a/arch/arm/include/asm/arch-rockchip/sdram_common.h
+++ b/arch/arm/include/asm/arch-rockchip/sdram.h
@@ -3,8 +3,8 @@
  * Copyright (C) 2017 Rockchip Electronics Co., Ltd.
  */
 
-#ifndef _ASM_ARCH_SDRAM_COMMON_H
-#define _ASM_ARCH_SDRAM_COMMON_H
+#ifndef _ASM_ARCH_SDRAM_H
+#define _ASM_ARCH_SDRAM_H
 
 enum {
 	DDR4 = 0,
diff --git a/arch/arm/mach-rockchip/Makefile b/arch/arm/mach-rockchip/Makefile
index 45d9b06..a9563ad 100644
--- a/arch/arm/mach-rockchip/Makefile
+++ b/arch/arm/mach-rockchip/Makefile
@@ -25,7 +25,7 @@
 obj-$(CONFIG_MISC_INIT_R) += misc.o
 endif
 
-obj-$(CONFIG_$(SPL_TPL_)RAM) += sdram_common.o
+obj-$(CONFIG_$(SPL_TPL_)RAM) += sdram.o
 
 obj-$(CONFIG_ROCKCHIP_RK3036) += rk3036/
 obj-$(CONFIG_ROCKCHIP_RK3128) += rk3128/
diff --git a/arch/arm/mach-rockchip/rk3036/rk3036.c b/arch/arm/mach-rockchip/rk3036/rk3036.c
index be458cf..e9ada6d 100644
--- a/arch/arm/mach-rockchip/rk3036/rk3036.c
+++ b/arch/arm/mach-rockchip/rk3036/rk3036.c
@@ -43,7 +43,7 @@
 #if !CONFIG_IS_ENABLED(RAM)
 /*
  * When CONFIG_RAM is enabled, the dram_init() function is implemented
- * in sdram_common.c.
+ * in sdram.c.
  */
 int dram_init(void)
 {
diff --git a/arch/arm/mach-rockchip/rk3288/rk3288.c b/arch/arm/mach-rockchip/rk3288/rk3288.c
index 987b4e0..ee2fb67 100644
--- a/arch/arm/mach-rockchip/rk3288/rk3288.c
+++ b/arch/arm/mach-rockchip/rk3288/rk3288.c
@@ -15,7 +15,7 @@
 #include <asm/arch-rockchip/grf_rk3288.h>
 #include <asm/arch-rockchip/pmu_rk3288.h>
 #include <asm/arch-rockchip/qos_rk3288.h>
-#include <asm/arch-rockchip/sdram_common.h>
+#include <asm/arch-rockchip/sdram.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
diff --git a/arch/arm/mach-rockchip/sdram_common.c b/arch/arm/mach-rockchip/sdram.c
similarity index 98%
rename from arch/arm/mach-rockchip/sdram_common.c
rename to arch/arm/mach-rockchip/sdram.c
index 22a4aca..acb1af7 100644
--- a/arch/arm/mach-rockchip/sdram_common.c
+++ b/arch/arm/mach-rockchip/sdram.c
@@ -7,7 +7,7 @@
 #include <dm.h>
 #include <ram.h>
 #include <asm/io.h>
-#include <asm/arch-rockchip/sdram_common.h>
+#include <asm/arch-rockchip/sdram.h>
 #include <dm/uclass-internal.h>
 
 DECLARE_GLOBAL_DATA_PTR;