uboot-phytec

mx6ul_14x14_evk: Move CONFIG_DM_74X164 to defconfig

The CONFIG_DM_74X164 symbols should be moved to the defconfig file,
as indicated in the comments.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>