ASoC: cs42xx8: Fix build error with CONFIG_GPIOLIB is not set

ASoC: cs42xx8: Fix build error with CONFIG_GPIOLIB is not set

config: x86_64-randconfig-x000201921-201921
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        make ARCH=x86_64

sound/soc/codecs/cs42xx8.c: In function ‘cs42xx8_probe’:
sound/soc/codecs/cs42xx8.c:472:25: error: implicit declaration of function ‘devm_gpiod_get_optional’; did you mean ‘devm_clk_get_optional’? [-Werror=implicit-function-declaration]
  cs42xx8->gpiod_reset = devm_gpiod_get_optional(dev, "reset",
                         ^~~~~~~~~~~~~~~~~~~~~~~
                         devm_clk_get_optional
sound/soc/codecs/cs42xx8.c:473:8: error: ‘GPIOD_OUT_HIGH’ undeclared (first use in this function); did you mean ‘GPIOF_INIT_HIGH’?
        GPIOD_OUT_HIGH);
        ^~~~~~~~~~~~~~
        GPIOF_INIT_HIGH
sound/soc/codecs/cs42xx8.c:473:8: note: each undeclared identifier is reported only once for each function it appears in
sound/soc/codecs/cs42xx8.c:477:2: error: implicit declaration of function ‘gpiod_set_value_cansleep’; did you mean ‘gpio_set_value_cansleep’? [-Werror=implicit-function-declaration]
  gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 0);
  ^~~~~~~~~~~~~~~~~~~~~~~~
  gpio_set_value_cansleep

Fixes: bfe95dfa4dac ("ASoC: cs42xx8: Add reset gpio handling")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>