ASoC: msm: Add support for voice over Bluetooth

Add support for Slimbus channels between external modem and APQ.
These channels transfer voice packets to/from the modem to the
BT stack on APQ.

Change-Id: I48bd5248104719574fbc6cf52edfb92cff79bff9
Signed-off-by: Neema Shetty <nshetty@codeaurora.org>
diff --git a/sound/soc/msm/msm-pcm-routing.h b/sound/soc/msm/msm-pcm-routing.h
index 9515ab3..423ff5f 100644
--- a/sound/soc/msm/msm-pcm-routing.h
+++ b/sound/soc/msm/msm-pcm-routing.h
@@ -34,6 +34,8 @@
 #define LPASS_BE_MI2S_RX "(Backend) MI2S_RX"
 #define LPASS_BE_STUB_RX "(Backend) STUB_RX"
 #define LPASS_BE_STUB_TX "(Backend) STUB_TX"
+#define LPASS_BE_SLIMBUS_1_RX "(Backend) SLIMBUS_1_RX"
+#define LPASS_BE_SLIMBUS_1_TX "(Backend) SLIMBUS_1_TX"
 
 /* For multimedia front-ends, asm session is allocated dynamically.
  * Hence, asm session/multimedia front-end mapping has to be maintained.
@@ -50,6 +52,7 @@
 	MSM_FRONTEND_DAI_VOIP,
 	MSM_FRONTEND_DAI_AFE_RX,
 	MSM_FRONTEND_DAI_AFE_TX,
+	MSM_FRONTEND_DAI_VOICE_STUB,
 	MSM_FRONTEND_DAI_MAX,
 };
 
@@ -75,6 +78,9 @@
 	MSM_BACKEND_DAI_INCALL_RECORD_TX,
 	MSM_BACKEND_DAI_MI2S_RX,
 	MSM_BACKEND_DAI_SEC_I2S_RX,
+	MSM_BACKEND_DAI_SLIMBUS_1_RX,
+	MSM_BACKEND_DAI_SLIMBUS_1_TX,
+	MSM_BACKEND_DAI_INVALID,
 	MSM_BACKEND_DAI_MAX,
 };