hal: Add support for multiple instances of offload playback

Add support for multiple offload playback instances for 8994
platform

Change-Id: I2098d06c3ea960626698d3f67640e2fe0c7020a9
diff --git a/hal/msm8974/platform.h b/hal/msm8974/platform.h
index d7d1944..16f9240 100644
--- a/hal/msm8974/platform.h
+++ b/hal/msm8974/platform.h
@@ -208,6 +208,16 @@
 #define PLAYBACK_OFFLOAD_DEVICE8 38
 #define PLAYBACK_OFFLOAD_DEVICE9 39
 #endif
+#ifdef PLATFORM_MSM8994
+#define PLAYBACK_OFFLOAD_DEVICE2 17
+#define PLAYBACK_OFFLOAD_DEVICE3 18
+#define PLAYBACK_OFFLOAD_DEVICE4 37
+#define PLAYBACK_OFFLOAD_DEVICE5 38
+#define PLAYBACK_OFFLOAD_DEVICE6 39
+#define PLAYBACK_OFFLOAD_DEVICE7 40
+#define PLAYBACK_OFFLOAD_DEVICE8 41
+#define PLAYBACK_OFFLOAD_DEVICE9 42
+#endif
 #endif
 
 #define COMPRESS_VOIP_CALL_PCM_DEVICE 3