This updates the U-Boot for 2013.07 final release and adds a single
patch on top of it, to fix Wandboard splash alignment.

The included changes are:

b899fa3 arm: at91sam9n12: change EBI IO to high drive mode
8b415f7 ext4fs: le32_to_cpu() used on a 16-bit field
50ffc3b fs/ext4: fix log2blksz un-initialized error, by cacaulating its value from blksz
62c175f Prepare v2013.07
cba5372 wandboard: Use splash image at screen center by default

Change-Id: I03f41014c1303afa9caa6ad26b89209e8bc63920
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>