[U-Boot] AM3517-EVM MMC broken

[Adam Ford]

It appears commit 4bafceff0e9e (" Merge git://git.denx.de/u-boot-mmc")
seems to have broken the AM3517-EVM board.  The AM3517 is similar to the
OMAP3, and the omap3_logic board (DM3730) works just fine.

The output does not show any text for SPL/MLO but 4bafceff0e9e is commit
which seems hard to traverse.  If anyone has any suggestions on something
to try, I'm open for ideas.

Thanks

adam