Create SettingsLib

This will hold common code that SystemUI and Settings (and others)
will share.

Bug: 19180466
Change-Id: I6614b31d6c3b0a2d426a2aa8ce66725245339d22
diff --git a/packages/SystemUI/Android.mk b/packages/SystemUI/Android.mk
index 2ff9a28..47ef42a 100644
--- a/packages/SystemUI/Android.mk
+++ b/packages/SystemUI/Android.mk
@@ -20,6 +20,8 @@
     $(LOCAL_PATH)/res
 LOCAL_AAPT_FLAGS := --auto-add-overlay --extra-packages com.android.keyguard
 
+include frameworks/base/packages/SettingsLib/common.mk
+
 include $(BUILD_PACKAGE)
 
 ifeq ($(EXCLUDE_SYSTEMUI_TESTS),)