u-boot-fslc: Update to 2014.10 upcoming release

This updates the U-Boot to the 2014.10 based branch. On top of the
original code we still have following changes applied:

d9783f2 wandboard: Use 32bit color depth for Fusion LCD
3015bd1 mx6sabresd: Use LDO dtb file until LDO bypass support is added
a71b487 mx6slevk: Use LDO dtb file until LDO bypass support is added
8feb5bb mx6sabresd: Use mmcblk0 for CONFIG_MMCROOT

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