arm: pxa: fix 2nd flash chip address on LP-8x4x

Initial configuration has worng address of the second chip.
There is an alias for the 1st chip at 0x02000000 in earlier
verions of LP-8x4x, so the boot normally.

However, new LP-8x4xs have a bigger 1st flash chip, and hang on
boot without this patch.
Signed-off-by: NSergei Ianovich <ynvich@gmail.com>
CC: Marek Vasut <marex@denx.de>

include/configs/lp8x4x.h

@@ -144,7 +144,7 @@
 #define	CONFIG_ENV_SECT_SIZE		0x40000
 
 #define	PHYS_FLASH_1			0x00000000	/* Flash Bank #1 */
-#define	PHYS_FLASH_2			0x02000000	/* Flash Bank #2 */
+#define	PHYS_FLASH_2			0x04000000	/* Flash Bank #2 */
 
 #define	CONFIG_SYS_FLASH_CFI
 #define	CONFIG_FLASH_CFI_DRIVER		1