imx: Fix missing spl_sd configuration for wandboard.

In commit 6e6cf015e7cdd7ca83a933320a81201972bd5e5e ("Merge
git://www.denx.de/git/u-boot-imx") the line defining spl_sd
configuration for wandboard was removed, which resulted in no SPL
target being built.

Add it back.

Signed-off-by: Vagrant Cascadian <vagrant@debian.org>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
1 file changed