83xx: fix CFG_ENV_ADDR and CFG_ENV_SECT_SIZE definitions

Fix the definitions of CFG_ENV_ADDR and CFG_ENV_SECT_SIZE for all of the
currently-defined 83xx boards.  This change guarantees that the environment
will be located on the first flash sector after the U-Boot image.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
diff --git a/include/configs/MPC8349EMDS.h b/include/configs/MPC8349EMDS.h
index 92555ba..7d5b17b 100644
--- a/include/configs/MPC8349EMDS.h
+++ b/include/configs/MPC8349EMDS.h
@@ -456,7 +456,7 @@
  */
 #ifndef CFG_RAMBOOT
 	#define CFG_ENV_IS_IN_FLASH	1
-	#define CFG_ENV_ADDR		(CFG_MONITOR_BASE + 0x40000)
+	#define CFG_ENV_ADDR		(CFG_MONITOR_BASE + CFG_MONITOR_LEN)
 	#define CFG_ENV_SECT_SIZE	0x20000	/* 128K(one sector) for env */
 	#define CFG_ENV_SIZE		0x2000