imx: mx6ul_14x14_evk discard MX6UL from CONFIG_SYS_EXTRA_OPTIONS

Discard MX6UL from CONFIG_SYS_EXTRA_OPTIONS, since we default
select MX6UL for mx6ul_14x14_evk board.

Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
1 file changed