ASoC: codecs: wcd938x: add codec dai for wcd938x

Add new codec dai for wcd938x, since WCD is
no longer initialized as an aux device but as a codec.

Change-Id: I1cb60ef3ef71692970011ef6c3b50cf9cd64b7ca
Signed-off-by: Vignesh Kulothungan <vigneshk@codeaurora.org>

asoc/codecs/wcd938x/wcd938x.h

@@ -10,6 +10,7 @@
 
 #define WCD938X_MAX_SLAVE_CH_TYPES 13
 #define ZERO 0
+#define WCD938X_DRV_NAME "wcd938x_codec"
 
 enum {
 	WCD9380 = 0,