ASoC: msm: Add support for stubbed hostless voice driver.

Stubbed hostless voice driver added to support use cases where
APQ QDSP6 voice module is not needed for voice calls.

Change-Id: I676726e6c704f1ee4cb078ed1b475a38afb8dc12
Signed-off-by: Neema Shetty <nshetty@codeaurora.org>
diff --git a/sound/soc/msm/msm-pcm-routing.c b/sound/soc/msm/msm-pcm-routing.c
index f99cf6e..b01c22c 100644
--- a/sound/soc/msm/msm-pcm-routing.c
+++ b/sound/soc/msm/msm-pcm-routing.c
@@ -46,6 +46,7 @@
 static struct mutex routing_lock;
 
 static int fm_switch_enable;
+
 #define INT_FM_RX_VOL_MAX_STEPS 100
 #define INT_FM_RX_VOL_GAIN 2000
 
@@ -1229,6 +1230,11 @@
 				0, 0, 0, 0),
 	SND_SOC_DAPM_AIF_OUT("AUX_PCM_RX", "AUX PCM Playback", 0, 0, 0, 0),
 	SND_SOC_DAPM_AIF_IN("AUX_PCM_TX", "AUX PCM Capture", 0, 0, 0, 0),
+	SND_SOC_DAPM_AIF_IN("VOICE_STUB_DL", "VOICE_STUB Playback", 0, 0, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("VOICE_STUB_UL", "VOICE_STUB Capture", 0, 0, 0, 0),
+	SND_SOC_DAPM_AIF_OUT("STUB_RX", "Stub Playback", 0, 0, 0, 0),
+	SND_SOC_DAPM_AIF_IN("STUB_TX", "Stub Capture", 0, 0, 0, 0),
+
 	/* Switch Definitions */
 	SND_SOC_DAPM_SWITCH("SLIMBUS_DL_HL", SND_SOC_NOPM, 0, 0,
 				&fm_switch_mixer_controls),
@@ -1432,6 +1438,8 @@
 	{"AUXPCM_RX Port Mixer", "AUX_PCM_UL_TX", "AUX_PCM_TX"},
 	{"AUXPCM_RX Port Mixer", "SLIM_0_TX", "SLIMBUS_0_TX"},
 	{"AUX_PCM_RX", NULL, "AUXPCM_RX Port Mixer"},
+	{"STUB_RX", NULL, "VOICE_STUB_DL"},
+	{"VOICE_STUB_UL", NULL, "STUB_TX"},
 };
 
 static int msm_pcm_routing_hw_params(struct snd_pcm_substream *substream,