ALSA: ASoC: Make all codecs depend on rather than selecting I2C

The I2C layer uses I/O operations that aren't available on all
architectures and since select bypasses Kconfig dependency checking
selecting I2C breaks builds like allmodconfig on some architectures.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

sound/soc/codecs/Kconfig

@@ -1,6 +1,6 @@
 config SND_SOC_ALL_CODECS
 	tristate "Build all ASoC CODEC drivers"
-	select I2C
+	depends on I2C
 	select SPI
 	select SND_SOC_AK4535
 	select SND_SOC_UDA1380