arm: mvebu: armada-388-gp.dts: Fix dtc warnings
Fix these dtc warnings:
Warning (reg_format)
Warning (avoid_default_addr_size)
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Chris Packham <judge.packham@gmail.com>