hal: add support for hfp on qcs610 platform

Add qcs610 platform specific pcm device id and
sco device id to support hfp with
dual asm loopback.

Change-Id: Ifb755cbd1a57e4680da798c1d04ce4597e6182cf
diff --git a/hal/msm8974/platform.h b/hal/msm8974/platform.h
index 4d09144..25ebc08 100755
--- a/hal/msm8974/platform.h
+++ b/hal/msm8974/platform.h
@@ -703,6 +703,11 @@
 #define HFP_ASM_RX_TX 18
 #define HFP_SEC_SCO_RX -1
 #define HFP_SEC_ASM_RX_TX -1
+#elif PLATFORM_MSMSTEPPE
+#define HFP_SCO_RX 12
+#define HFP_ASM_RX_TX 37
+#define HFP_SEC_SCO_RX -1
+#define HFP_SEC_ASM_RX_TX -1
 #else
 #define HFP_SCO_RX 23
 #define HFP_ASM_RX_TX 24