mips: ath79: Use 8MB flash profile for mtd partition by default

Change bootm flash address and mtd partition table for 8MB flash profile.

Signed-off-by: Wills Wang <wills.wang@live.com>
diff --git a/include/configs/ap121.h b/include/configs/ap121.h
index f069d50..b01031c 100644
--- a/include/configs/ap121.h
+++ b/include/configs/ap121.h
@@ -40,13 +40,13 @@
 					"rootfstype=squashfs"
 #define CONFIG_BOOTCOMMAND              "sf probe;" \
 					"mtdparts default;" \
-					"bootm 0x9f300000"
+					"bootm 0x9f650000"
 #define CONFIG_LZMA
 
 #define MTDIDS_DEFAULT                  "nor0=spi-flash.0"
 #define MTDPARTS_DEFAULT                "mtdparts=spi-flash.0:" \
 					"256k(u-boot),64k(u-boot-env)," \
-					"2752k(rootfs),896k(uImage)," \
+					"6144k(rootfs),1600k(uImage)," \
 					"64k(NVRAM),64k(ART)"
 
 #define CONFIG_ENV_SPI_MAX_HZ           25000000