exynos: Move common smdk5420 things to common file

A few things are common but are not in the common file. Fix this and
rename the file to fit with the other exynos*-common files.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/include/configs/exynos5420-common.h b/include/configs/exynos5420-common.h
new file mode 100644
index 0000000..27e7edc
--- /dev/null
+++ b/include/configs/exynos5420-common.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2013 Samsung Electronics
+ *
+ * Configuration settings for the SAMSUNG EXYNOS5420 SoC
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __CONFIG_EXYNOS5420_H
+#define __CONFIG_EXYNOS5420_H
+
+#define CONFIG_EXYNOS5420
+
+#include <configs/exynos5-common.h>
+
+#define MACH_TYPE_SMDK5420	8002
+#define CONFIG_MACH_TYPE	MACH_TYPE_SMDK5420
+
+#define CONFIG_VAR_SIZE_SPL
+
+#define CONFIG_SYS_SDRAM_BASE		0x20000000
+#define CONFIG_SYS_TEXT_BASE		0x23E00000
+#ifdef CONFIG_VAR_SIZE_SPL
+#define CONFIG_SPL_TEXT_BASE		0x02024410
+#else
+#define CONFIG_SPL_TEXT_BASE		0x02024400
+#endif
+#define CONFIG_IRAM_TOP			0x02074000
+
+#define CONFIG_SPL_MAX_FOOTPRINT	(30 * 1024)
+
+#define CONFIG_DEVICE_TREE_LIST "exynos5420-peach-pit exynos5420-smdk5420"
+
+#define CONFIG_MAX_I2C_NUM	11
+
+#define CONFIG_BOARD_REV_GPIO_COUNT	2
+
+#define CONFIG_BOOTCOMMAND	"mmc read 20007000 451 2000; bootm 20007000"
+
+/*
+ * Put the initial stack pointer 1KB below this to allow room for the
+ * SPL marker. This value is arbitrary, but gd_t is placed starting here.
+ */
+#define CONFIG_SYS_INIT_SP_ADDR	(CONFIG_IRAM_TOP - 0x800)
+
+/* DRAM Memory Banks */
+#define CONFIG_NR_DRAM_BANKS	7
+#define SDRAM_BANK_SIZE		(512UL << 20UL)	/* 512 MB */
+
+#endif	/* __CONFIG_EXYNOS5420_H */