ASoC: samsung: include gpio consumer.h

Fix the following build errors on X86_32 !GPIOLIB

sound/soc/samsung/tm2_wm5110.c:220:3: error: implicit declaration
of function 'gpiod_set_value_cansleep' [-Werror=implicit-function-declaration]
sound/soc/samsung/tm2_wm5110.c:438:24: error: implicit declaration
of function 'devm_gpiod_get' [-Werror=implicit-function-declaration]

Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Mark Brown <broonie@kernel.org>