mpc83xx: add h/w flash protection to board configs

the operating system may leave flash in a h/w locked state after writing.
This allows u-boot to continue to write flash by enabling h/w unlocking
by default.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/include/configs/MPC832XEMDS.h b/include/configs/MPC832XEMDS.h
index 01cf557..9a9b500 100644
--- a/include/configs/MPC832XEMDS.h
+++ b/include/configs/MPC832XEMDS.h
@@ -169,6 +169,7 @@
 #define CONFIG_FLASH_CFI_DRIVER	/* use the CFI driver */
 #define CFG_FLASH_BASE		0xFE000000	/* FLASH base address */
 #define CFG_FLASH_SIZE		16	/* FLASH size is 16M */
+#define CFG_FLASH_PROTECTION	1		/* Use h/w Flash protection. */
 
 #define CFG_LBLAWBAR0_PRELIM	CFG_FLASH_BASE	/* Window base at flash base */
 #define CFG_LBLAWAR0_PRELIM	0x80000018	/* 32MB window size */