The GPIO block for ls2080a platform has little endian registers,
the GPIO driver needs this property to read/write registers by
right interface.
Signed-off-by: NLiu Gang <Gang.Liu@freescale.com>
Signed-off-by: NLi Yang <leoli@freescale.com>
Signed-off-by: NKevin Hilman <khilman@linaro.org>