ASoC: Hook i.MX into build

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/Kconfig

@@ -29,6 +29,7 @@ source "sound/soc/au1x/Kconfig"
 source "sound/soc/blackfin/Kconfig"
 source "sound/soc/davinci/Kconfig"
 source "sound/soc/fsl/Kconfig"
+source "sound/soc/imx/Kconfig"
 source "sound/soc/omap/Kconfig"
 source "sound/soc/pxa/Kconfig"
 source "sound/soc/s3c24xx/Kconfig"