u-boot: Update u-boot 2012.10 to a newer version

u-boot: Update u-boot 2012.10 to a newer version

This update includes the following changes:

 mx53loco: Change default loadaddr to 0x72000000
 mx6qsabrelite: Change default loadaddr to 0x12000000
 mx6qsabre_common: Change default loadaddr to 0x12000000
 mx28evk: Add support to dynamically choose between ftd use or not
 mx53loco: Add support to dynamically choose between ftd use or not
 mx6qsabrelite: Add support to dynamically choose between ftd use or not
 mx6qsabre{auto,sd}: Add support to dynamically choose between ftd use or not

Signed-off-by: Daiane Angolini <daiane.angolini@freescale.com>