Fix build

Change-Id: I7a62c86c6b089904d9dc50614540cc6e7a5c99d1
Signed-off-by: Ed Tam <etam@google.com>
diff --git a/hal/Android.mk b/hal/Android.mk
index ba59efc..ae1657f 100644
--- a/hal/Android.mk
+++ b/hal/Android.mk
@@ -50,11 +50,11 @@
 	platform_info.c \
 	audio_extn/ext_speaker.c \
 	audio_extn/audio_extn.c \
-	$(AUDIO_PLATFORM)/platform.c \
+	$(AUDIO_PLATFORM)/platform.c
 
 ifdef MULTIPLE_HW_VARIANTS_ENABLED
   LOCAL_CFLAGS += -DHW_VARIANTS_ENABLED
-  LOCAL_SRC_FILES +=  $(AUDIO_PLATFORM)/hw_info.c \
+  LOCAL_SRC_FILES +=  $(AUDIO_PLATFORM)/hw_info.c
 endif
 
 LOCAL_SHARED_LIBRARIES := \