ASoC: Add DA7213 audio codec as selectable option

This commit adds the Dialog DA7213 audio codec as a selectable option
in the kernel config. Currently the driver can only be selected for
Intel Baytrail/Cherrytrail devices or if SND_SOC_ALL_CODECS is enabled.

Signed-off-by: Sebastian Reichel <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Mark Brown <[e-mail]>

sound/soc/codecs/Kconfig

···
         tristate
 
 config SND_SOC_DA7213
-        tristate
+	tristate "Dialog DA7213 CODEC"
+	depends on I2C
 
 config SND_SOC_DA7218
 	tristate