Fix auto_update for MCC200 board.

The invocation of do_auto_update() is moved to the end of the
misc_init_r() function, after the flash mappings have been
initialized. Please find attached a patch that implements that
change.

Also correct the decoding of the keypad status. With this update, the
key that will trigger the update is Column 2, Row 2.
diff --git a/board/mcc200/auto_update.c b/board/mcc200/auto_update.c
index 63e4139..f1bb721 100644
--- a/board/mcc200/auto_update.c
+++ b/board/mcc200/auto_update.c
@@ -121,10 +121,10 @@
 #define I2C_PSOC_KEYPAD_ADDR	0x53
 
 /* keypad mask */
-#define KEYPAD_ROW	3
-#define KEYPAD_COL	3
-#define KEYPAD_MASK_LO	((1<<(KEYPAD_COL-1+(KEYPAD_ROW*4-4)))&0xFF)
-#define KEYPAD_MASK_HI	((1<<(KEYPAD_COL-1+(KEYPAD_ROW*4-4)))>>8)
+#define KEYPAD_ROW	2
+#define KEYPAD_COL	2
+#define KEYPAD_MASK_LO	((1<<(KEYPAD_COL-1+(KEYPAD_ROW*3-3)))&0xFF)
+#define KEYPAD_MASK_HI	((1<<(KEYPAD_COL-1+(KEYPAD_ROW*3-3)))>>8)
 
 /* externals */
 extern int fat_register_device(block_dev_desc_t *, int);