OMAP3: overo: eliminate hard-coded partition offsets

The linux kernel is at nand0,3 using the current layout, but is best
accessed through the partition label "linux".  Since CONFIG_CMD_MTDPARTS is
defined the CONFIG_JFFS2 settings are unreferenced; use "setenv partition
rootfs" to set the default mtd partition for jffs2.

Signed-off-by: Peter A. Bigot <pab@pabigot.com>
Tested-by: Ash Charles <ash@gumstix.com>

include/configs/omap3_overo.h

@@ -154,14 +154,6 @@
 							/* at CS0 */
 #define CONFIG_SYS_MAX_NAND_DEVICE	1	/* Max number of NAND */
 						/* devices */
-#define CONFIG_JFFS2_NAND
-/* nand device jffs2 lives on */
-#define CONFIG_JFFS2_DEV		"nand0"
-/* start of jffs2 partition */
-#define CONFIG_JFFS2_PART_OFFSET	0x680000
-#define CONFIG_JFFS2_PART_SIZE		0xf980000	/* size of jffs2 */
-							/* partition */
-
 /* Environment information */
 #define CONFIG_BOOTDELAY		5
 
@@ -207,7 +199,7 @@
 		"bootm ${loadaddr}\0" \
 	"nandboot=echo Booting from nand ...; " \
 		"run nandargs; " \
-		"nand read ${loadaddr} 280000 400000; " \
+		"nand read ${loadaddr} linux; " \
 		"bootm ${loadaddr}\0" \
 
 #define CONFIG_BOOTCOMMAND \