frameworks/av: convert LOCAL_MODULE_PATH to LOCAL_MODULE_RELATIVE_PATH

LOCAL_MODULE_PATH doesn't work for multiarch builds, replace it
with LOCAL_MODULE_RELATIVE_PATH.

Change-Id: I4e4ceec61d026bbe74ba604554c06104bde42e5e
diff --git a/media/libeffects/testlibs/Android.mk_ b/media/libeffects/testlibs/Android.mk_
index 2954908..672ebba 100644
--- a/media/libeffects/testlibs/Android.mk_
+++ b/media/libeffects/testlibs/Android.mk_
@@ -11,7 +11,7 @@
 LOCAL_SHARED_LIBRARIES := \
 	libcutils
 
-LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/soundfx
+LOCAL_MODULE_RELATIVE_PATH := soundfx
 LOCAL_MODULE:= libreverbtest
 
 ifeq ($(TARGET_OS)-$(TARGET_SIMULATOR),linux-true)
@@ -47,7 +47,7 @@
 LOCAL_SHARED_LIBRARIES := \
 	libcutils
 
-LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/soundfx
+LOCAL_MODULE_RELATIVE_PATH := soundfx
 LOCAL_MODULE:= libequalizertest
 
 ifeq ($(TARGET_OS)-$(TARGET_SIMULATOR),linux-true)