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[PATCH] ASoC: max98988: add I2C dependency

max98988 only builds with I2C support enabled, otherwise we get a build error:

sound/soc/codecs/max98088.c:1789:1: error: data definition has no type or storage class [-Werror]
sound/soc/codecs/max98088.c:1789:1: error: type defaults to 'int' in declaration of 'module_i2c_driver' [-Werror=implicit-int]
sound/soc/codecs/max98088.c:1789:1: error: parameter names (without types) in function declaration [-Werror]
sound/soc/codecs/max98088.c:1780:26: error: 'max98088_i2c_driver' defined but not used [-Werror=unused-variable]

Fixes: 24ae67c58250 ("ASoC: max98988: make it selectable")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
 sound/soc/codecs/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 3c6bd6019b92..774d38310875 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -641,6 +641,7 @@ config SND_SOC_LM49453
 config SND_SOC_MAX98088
 	tristate "Maxim MAX98088/9 Low-Power, Stereo Audio Codec"
+	depends on I2C
 config SND_SOC_MAX98090