CTS: Suppress -Wunused-parameter

Suppress unused-parameter warnings to lower build-time spam.

Bug: 18632512
Test: mmma cts
Change-Id: I2af0a9b0009e91415f87a397611d716567fbb16b
diff --git a/suite/audio_quality/lib/Android.mk b/suite/audio_quality/lib/Android.mk
index cd19e85..2b3c22a 100644
--- a/suite/audio_quality/lib/Android.mk
+++ b/suite/audio_quality/lib/Android.mk
@@ -19,7 +19,7 @@
 LOCAL_SRC_FILES := $(call all-subdir-cpp-files)
 LOCAL_C_INCLUDES += $(LOCAL_PATH)/include $(LOCAL_PATH)/src
 LOCAL_STATIC_LIBRARIES += libutils liblog libtinyalsa libcutils libtinyxml2
-LOCAL_CFLAGS:= -g -fno-exceptions
+LOCAL_CFLAGS:= -g -fno-exceptions -Wno-unused-parameter
 LOCAL_LDFLAGS:= -g -lrt -ldl -lm -fno-exceptions
 LOCAL_MODULE_HOST_OS := linux
 LOCAL_MODULE:= libcts_audio_quality