hal: Add support for voice speaker stereo

Add device entries and additional support to enable
voice speaker stereo and stereo-protected features.

Change-Id: Iad40d6a297824181ed380a5a3f37254f58144de5
diff --git a/hal/msm8916/platform.h b/hal/msm8916/platform.h
index 1cf7a62..8d87a9f 100644
--- a/hal/msm8916/platform.h
+++ b/hal/msm8916/platform.h
@@ -99,6 +99,7 @@
     SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES_EXTERNAL_2,
     SND_DEVICE_OUT_VOICE_HANDSET,
     SND_DEVICE_OUT_VOICE_SPEAKER,
+    SND_DEVICE_OUT_VOICE_SPEAKER_STEREO,
     SND_DEVICE_OUT_VOICE_SPEAKER_WSA,
     SND_DEVICE_OUT_VOICE_SPEAKER_VBAT,
     SND_DEVICE_OUT_VOICE_SPEAKER_2,
@@ -136,6 +137,7 @@
     SND_DEVICE_OUT_SPEAKER_PROTECTED,
     SND_DEVICE_OUT_VOICE_SPEAKER_PROTECTED,
     SND_DEVICE_OUT_VOICE_SPEAKER_2_PROTECTED,
+    SND_DEVICE_OUT_VOICE_SPEAKER_STEREO_PROTECTED,
     SND_DEVICE_OUT_SPEAKER_PROTECTED_VBAT,
     SND_DEVICE_OUT_VOICE_SPEAKER_PROTECTED_VBAT,
     SND_DEVICE_OUT_VOICE_SPEAKER_2_PROTECTED_VBAT,
@@ -148,6 +150,8 @@
 #endif
     SND_DEVICE_OUT_VOICE_SPEAKER_AND_VOICE_HEADPHONES,
     SND_DEVICE_OUT_VOICE_SPEAKER_AND_VOICE_ANC_HEADSET,
+    SND_DEVICE_OUT_VOICE_SPEAKER_STEREO_AND_VOICE_HEADPHONES,
+    SND_DEVICE_OUT_VOICE_SPEAKER_STEREO_AND_VOICE_ANC_HEADSET,
     SND_DEVICE_OUT_END,
 
     /*