logcat: Add logcat test suite

(cherry picked from commit 2807db9a269baaa7b3f67c337d3312877ba90aa0)

Change-Id: Ic4c84b88b8d899965c9765bdc3ee223ef73ba7d1
diff --git a/logcat/Android.mk b/logcat/Android.mk
index 7b8eb01..b5e27eb 100644
--- a/logcat/Android.mk
+++ b/logcat/Android.mk
@@ -1,4 +1,4 @@
-# Copyright 2006 The Android Open Source Project
+# Copyright 2006-2014 The Android Open Source Project
 
 LOCAL_PATH:= $(call my-dir)
 include $(CLEAR_VARS)
@@ -10,3 +10,5 @@
 LOCAL_MODULE:= logcat
 
 include $(BUILD_EXECUTABLE)
+
+include $(call first-makefiles-under,$(LOCAL_PATH))