configs: am3517-evm: Setup NAND booting

The NAND offsets for the kernel and U-Boot were missing.
This patch sets up the offsets so the AM3517-EVM can boot from NAND
when DIP switches S7:1 and S7:4 are to the OFF position

Signed-off-by: Adam Ford <aford173@gmail.com>
1 file changed