hal: Fix setting stream channel map properly

Fix setting stream channel map properly

Change-Id: I78620f699c5c5ceb9d4e282bb35911574cf9dca5
diff --git a/hal/msm8974/platform.c b/hal/msm8974/platform.c
index e39c48e..675a306 100644
--- a/hal/msm8974/platform.c
+++ b/hal/msm8974/platform.c
@@ -3164,10 +3164,12 @@
         case 1:
             /* AUDIO_CHANNEL_OUT_MONO */
             channel_map[0] = PCM_CHANNEL_FC;
+            break;
         case 2:
             /* AUDIO_CHANNEL_OUT_STEREO */
             channel_map[0] = PCM_CHANNEL_FL;
             channel_map[1] = PCM_CHANNEL_FR;
+            break;
         case 3:
             /* AUDIO_CHANNEL_OUT_2POINT1 */
             channel_map[0] = PCM_CHANNEL_FL;
@@ -3222,6 +3224,7 @@
             channel_map[4] = PCM_CHANNEL_LB;
             channel_map[5] = PCM_CHANNEL_RB;
             channel_map[6] = PCM_CHANNEL_CS;
+            break;
         case 8:
             /* AUDIO_CHANNEL_OUT_7POINT1 */
             channel_map[0] = PCM_CHANNEL_FL;