Add initial gamepad support.

Change-Id: I0439648f6eb5405f200e4223c915eb3a418b32b9
diff --git a/libs/utils/Android.mk b/libs/utils/Android.mk
index 2bb42ab..8bd5823 100644
--- a/libs/utils/Android.mk
+++ b/libs/utils/Android.mk
@@ -122,3 +122,13 @@
 include $(BUILD_STATIC_LIBRARY)
 endif
 endif
+
+
+# Include subdirectory makefiles
+# ============================================================
+
+# If we're building with ONE_SHOT_MAKEFILE (mm, mmm), then what the framework
+# team really wants is to build the stuff defined by this makefile.
+ifeq (,$(ONE_SHOT_MAKEFILE))
+include $(call first-makefiles-under,$(LOCAL_PATH))
+endif
\ No newline at end of file