hal: add support for msm cobalt for platform defines

Add in support for msm cobalt for playback offload
device defines.

Change-Id: I82d4f5962ed714d59146f551c4834ee74b675b42
diff --git a/hal/msm8974/platform.h b/hal/msm8974/platform.h
index b56c40e..caa40d1 100644
--- a/hal/msm8974/platform.h
+++ b/hal/msm8974/platform.h
@@ -264,11 +264,11 @@
 #define PLAYBACK_OFFLOAD_DEVICE 9
 
 // Direct_PCM
-#if defined (PLATFORM_MSM8994) || defined (PLATFORM_MSM8996) || defined (PLATFORM_APQ8084)
+#if defined (PLATFORM_MSM8994) || defined (PLATFORM_MSM8996) || defined (PLATFORM_APQ8084) || defined (PLATFORM_MSMCOBALT)
 #define PLAYBACK_OFFLOAD_DEVICE2 17
 #endif
 
-#if defined (PLATFORM_APQ8084) || defined (PLATFORM_MSM8996)
+#if defined (PLATFORM_APQ8084) || defined (PLATFORM_MSM8996) || defined (PLATFORM_MSMCOBALT)
 #define PLAYBACK_OFFLOAD_DEVICE3 18
 #define PLAYBACK_OFFLOAD_DEVICE4 34
 #define PLAYBACK_OFFLOAD_DEVICE5 35