move sync headers from include to libsync

Make sw_sync.h private

Change-Id: I0b120ebe81fd4a191b7aa4b6a8de4f64d16e2b3e
diff --git a/libsync/Android.mk b/libsync/Android.mk
index 73de069..626b762 100644
--- a/libsync/Android.mk
+++ b/libsync/Android.mk
@@ -5,6 +5,8 @@
 LOCAL_MODULE := libsync
 LOCAL_MODULE_TAGS := optional
 LOCAL_SHARED_LIBRARIES := liblog
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
 include $(BUILD_SHARED_LIBRARY)
 
 include $(CLEAR_VARS)
@@ -12,4 +14,5 @@
 LOCAL_MODULE := sync_test
 LOCAL_MODULE_TAGS := optional tests
 LOCAL_SHARED_LIBRARIES := liblog
+LOCAL_C_INCLUDES := $(LOCAL_PATH)/include
 include $(BUILD_EXECUTABLE)