With commit b17d1bf1 ("gpio: make flags mandatory for gpiod_get functions")
it becomes necessary to pass the flags argument. And this patch adds the gpio
header file to fix the build breakage when build testing with random
configuration files.
Reported-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NChanwoo Choi <cw00.choi@samsung.com>
Acked-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>