ASoC: fix unmet dependency on GPIOLIB

When SND_SOC_SC7180 or SND_SOC_STORM is selected,
and GPIOLIB is not selected, Kbuild gives the following
warning:

WARNING: unmet direct dependencies detected for SND_SOC_MAX98357A
  Depends on [n]: SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] && GPIOLIB [=n]
  Selected by [y]:
  - SND_SOC_STORM [=y] && SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] && SND_SOC_QCOM [=y]
  - SND_SOC_SC7180 [=y] && SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] && SND_SOC_QCOM [=y] && I2C [=y]

This is because SND_SOC_MAX98357A is selected
by SND_SOC_STORM and SND_SOC_SC7180, but
these config options do not select or depend on
GPIOLIB, despite SND_SOC_MAX98357A depending on
GPIOLIB.

These unmet dependency bugs were detected by Kismet,
a static analysis tool for Kconfig. Please advise if this
is not the appropriate solution.
Signed-off-by: Julian Braha <julianbraha@gmail.com>
Link: https://lore.kernel.org/r/20211010215627.17869-1-julianbraha@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/qcom/Kconfig

@@ -38,6 +38,7 @@ config SND_SOC_LPASS_SC7180
 
 config SND_SOC_STORM
 	tristate "ASoC I2S support for Storm boards"
+	depends on GPIOLIB
 	select SND_SOC_LPASS_IPQ806X
 	select SND_SOC_MAX98357A
 	help
@@ -141,7 +142,7 @@ config SND_SOC_SM8250
 
 config SND_SOC_SC7180
 	tristate "SoC Machine driver for SC7180 boards"
-	depends on I2C
+	depends on I2C && GPIOLIB
 	select SND_SOC_QCOM_COMMON
 	select SND_SOC_LPASS_SC7180
 	select SND_SOC_MAX98357A