regulator: rk808: add #include for gpiod functions
This fixes a build problem on mips found by the kbuild test robot:
drivers/regulator/rk808-regulator.c: In function 'rk808_buck1_2_get_voltage_sel_regmap':
drivers/regulator/rk808-regulator.c:97:2: error: implicit declaration of function 'gpiod_get_value' [-Werror=implicit-function-declaration]
if (IS_ERR(gpio) || gpiod_get_value(gpio) == 0)
^
Fixes: bad47ad2eef3 ("regulator: rk808: fixed the overshoot when adjust voltage")
Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
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Uwe Kleine-König