linux-mainline 3.8: fix thumb2 builds

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>
u-boot-denx: update to 2013.04-rc1

* Drop DFU patches
* Check uSD before eMMC on BBB
* Default to BBB when EEPROM is empty

Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>