uboot-imx

ARM: uniphier: do not setup pins for System Bus on NAND boot mode

For LD11 and LD20 SoCs, the System Bus and NAND are multiplexed
in the same I/O pins.  When booting from a NAND device, pin-mux
for the System Bus must not be set-up because they are exclusive
with each other.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>