configs: k2*_evm: let each board decide env location

Not all TI Keystone2 EVMs want environment in NAND flash.
K2G EVM which has an MMC/SD slot, keep environment in a
FAT partition on SD card.

Since ti_armv7_keystone2.h defines environment is in NAND,
boards which do not follow that have to #undef'ine that
configuration. This leads to ugly ordering issues around
where exactly the include of ti_armv7_keystone2.h can come
in within the k2*_evm.h files.

Move environment location to config file of each board.
This should make it easy to change it for any one board
without affecting all other boards.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>

include/configs/k2e_evm.h

@@ -27,6 +27,10 @@
 	"name_uboot=u-boot-spi-k2e-evm.gph\0"				\
 	"name_fs=arago-console-image-k2e-evm.cpio.gz\0"
 
+#define CONFIG_ENV_SIZE				(256 << 10)  /* 256 KiB */
+#define CONFIG_ENV_IS_IN_NAND
+#define CONFIG_ENV_OFFSET			0x100000
+
 #include <configs/ti_armv7_keystone2.h>
 
 /* SPL SPI Loader Configuration */

include/configs/k2g_evm.h

@@ -63,8 +63,8 @@
 #define CONFIG_PHY_MICREL
 #define PHY_ANEG_TIMEOUT	10000 /* PHY needs longer aneg time */
 
-#undef CONFIG_ENV_IS_IN_NAND
 #define CONFIG_ENV_IS_IN_FAT
+#define CONFIG_ENV_SIZE			(256 << 10)  /* 256 KiB */
 #define FAT_ENV_INTERFACE		"mmc"
 #define FAT_ENV_DEVICE_AND_PART		"0:1"
 #define FAT_ENV_FILE			"uboot.env"

include/configs/k2hk_evm.h

@@ -27,6 +27,10 @@
 	"name_uboot=u-boot-spi-k2hk-evm.gph\0"				\
 	"name_fs=arago-console-image-k2hk-evm.cpio.gz\0"
 
+#define CONFIG_ENV_SIZE				(256 << 10)  /* 256 KiB */
+#define CONFIG_ENV_IS_IN_NAND
+#define CONFIG_ENV_OFFSET			0x100000
+
 #include <configs/ti_armv7_keystone2.h>
 
 /* SPL SPI Loader Configuration */

include/configs/k2l_evm.h

@@ -27,6 +27,10 @@
 	"name_uboot=u-boot-spi-k2l-evm.gph\0"				\
 	"name_fs=arago-console-image-k2l-evm.cpio.gz\0"
 
+#define CONFIG_ENV_SIZE				(256 << 10)  /* 256 KiB */
+#define CONFIG_ENV_IS_IN_NAND
+#define CONFIG_ENV_OFFSET			0x100000
+
 #include <configs/ti_armv7_keystone2.h>
 
 /* SPL SPI Loader Configuration */

include/configs/ti_armv7_keystone2.h

@@ -185,9 +185,6 @@
 #define CONFIG_SYS_MAX_NAND_DEVICE		1
 #define CONFIG_SYS_NAND_MAX_CHIPS		1
 #define CONFIG_SYS_NAND_NO_SUBPAGE_WRITE
-#define CONFIG_ENV_SIZE				(256 << 10)  /* 256 KiB */
-#define CONFIG_ENV_IS_IN_NAND
-#define CONFIG_ENV_OFFSET			0x100000
 #define CONFIG_MTD_PARTITIONS
 #define CONFIG_RBTREE
 #define CONFIG_LZO