ASoC: cs4349: include gpio/consumer.h

ASoC: cs4349: include gpio/consumer.h

s390 allmodconfig:

sound/soc/codecs/cs4349.c: In function 'cs4349_i2c_probe':
sound/soc/codecs/cs4349.c:300: error: implicit declaration of function 'devm_gpiod_get_optional'
sound/soc/codecs/cs4349.c:301: error: 'GPIOD_OUT_LOW' undeclared (first use in this function)
sound/soc/codecs/cs4349.c:301: error: (Each undeclared identifier is reported only once
sound/soc/codecs/cs4349.c:301: error: for each function it appears in.)
sound/soc/codecs/cs4349.c:306: error: implicit declaration of function 'gpiod_set_value_cansleep'

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mark Brown <broonie@kernel.org>