powerpc/85xx: Bump up the CONFIG_SYS_BOOTM_LEN to 16M on FSL 85xx boards

CONFIG_SYS_BOOTMAPSZ has been 16M on these boards for some time so we
should also allow the kernel image to be up to 16M decompressed.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/include/configs/MPC8541CDS.h b/include/configs/MPC8541CDS.h
index 12ce6f7..7101230 100644
--- a/include/configs/MPC8541CDS.h
+++ b/include/configs/MPC8541CDS.h
@@ -1,5 +1,5 @@
 /*
- * Copyright 2004 Freescale Semiconductor.
+ * Copyright 2004, 2011 Freescale Semiconductor.
  *
  * See file CREDITS for list of people who contributed to this
  * project.
@@ -436,6 +436,7 @@
  * the maximum mapped by the Linux kernel during initialization.
  */
 #define CONFIG_SYS_BOOTMAPSZ	(16 << 20)	/* Initial Memory map for Linux*/
+#define CONFIG_SYS_BOOTM_LEN	(16 << 20)	/* Increase max gunzip size */
 
 #if defined(CONFIG_CMD_KGDB)
 #define CONFIG_KGDB_BAUDRATE	230400	/* speed to run kgdb serial port */