mx6sabre: Remove unnecessary SPL configs

Because we don't use SPL_DM on mx6sabresd and mx6sabreauto, so it is
unnecessary to have SPL DTB related configs and SPL_OF_CONTROL enabled.

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Gaurav Jain <gaurav.jain@nxp.com>
2 files changed