ASoC: msm8930: Correct microphone bias setting for Headset Mic

msm8930 uses external mic biasing for headset mic. Correct the
microphone bias for headset microphone by setting it to external
biasing

Change-Id: I0324f6f9922e12a3263ff803a7fa882ac08a956c
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>
diff --git a/sound/soc/msm/msm8930.c b/sound/soc/msm/msm8930.c
index 20ac6e1..439d4b1 100644
--- a/sound/soc/msm/msm8930.c
+++ b/sound/soc/msm/msm8930.c
@@ -307,8 +307,8 @@
 	{"Ext Spk Left Neg", NULL, "LINEOUT2"},
 
 	/* Headset Mic */
-	{"AMIC2", NULL, "MIC BIAS2 Internal1"},
-	{"MIC BIAS2 Internal1", NULL, "Headset Mic"},
+	{"AMIC2", NULL, "MIC BIAS2 External"},
+	{"MIC BIAS2 External", NULL, "Headset Mic"},
 
 	/* Microphone path */
 	{"AMIC1", NULL, "MIC BIAS2 External"},