ASoC: mediatek: Add AFE platform driver

This is the DPCM based platform driver of AFE (Audio Front End) unit.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Koro Chen <koro.chen@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/Makefile b/sound/soc/Makefile
index 974ba70..e552633 100644
--- a/sound/soc/Makefile
+++ b/sound/soc/Makefile
@@ -23,6 +23,7 @@
 obj-$(CONFIG_SND_SOC)	+= fsl/
 obj-$(CONFIG_SND_SOC)	+= jz4740/
 obj-$(CONFIG_SND_SOC)	+= intel/
+obj-$(CONFIG_SND_SOC)	+= mediatek/
 obj-$(CONFIG_SND_SOC)	+= mxs/
 obj-$(CONFIG_SND_SOC)	+= nuc900/
 obj-$(CONFIG_SND_SOC)	+= omap/