imx: mx7dsabresd: drop SYS_SOC from board Kconfig

We have defined this kconfig entry in arch/arm/cpu/armv7/mx7/Kconfig,
no need to redefine it in board Kconfig.

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