imx: mx6ul: disable VIDEO for SPL

With DEBUG macro enabled, SPL build failure:
"
arch/arm/cpu/armv7/built-in.o: In function `reset_misc':
~/uboot/arch/arm/cpu/armv7/mx6/soc.c:406: undefined reference to `lcdif_power_down'
scripts/Makefile.spl:244: recipe for target 'spl/u-boot-spl' failed
"
Wrap VIDEO settings with ifndef CONFIG_SPL_BUILD

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Stefano Babic <sbabic@denx.de>
1 file changed