audio: qahw: Fix compilation errors

Fix compilation errors such as
- unused parameter
- multiple declaration.
Also modify makefile to install images
in vendor partition.

Change-Id: I3d998eef91a16a890993449e92ef8f5443558c78
diff --git a/qahw_api/test/Android.mk b/qahw_api/test/Android.mk
index ec4e698..06e8a5a 100644
--- a/qahw_api/test/Android.mk
+++ b/qahw_api/test/Android.mk
@@ -20,10 +20,10 @@
     libutils \
     libcutils
 
-LOCAL_LDLIBS := -lpthread
 LOCAL_32_BIT_ONLY := true
 
 LOCAL_C_INCLUDES += $(hal-play-inc)
+LOCAL_VENDOR_MODULE := true
 
 include $(BUILD_EXECUTABLE)
 
@@ -43,4 +43,6 @@
 hal-rec-inc     = $(TARGET_OUT_HEADERS)/mm-audio/qahw_api/inc
 
 LOCAL_C_INCLUDES += $(hal-rec-inc)
+LOCAL_VENDOR_MODULE := true
+
 include $(BUILD_EXECUTABLE)