construct event-log-tags via the new build mechanism

The build system now unions together all *.logtags files found in
LOCAL_SRC_FILES to construct /system/etc/event-log-tags.

logcat/Android.mk

@@ -3,24 +3,10 @@
 LOCAL_PATH:= $(call my-dir)
 include $(CLEAR_VARS)
 
-LOCAL_SRC_FILES:= logcat.cpp
+LOCAL_SRC_FILES:= logcat.cpp event.logtags
 
 LOCAL_SHARED_LIBRARIES := liblog
 
 LOCAL_MODULE:= logcat
 
 include $(BUILD_EXECUTABLE)
-
-########################
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := event-log-tags
-
-# This will install the file in /system/etc
-#
-LOCAL_MODULE_CLASS := ETC
-
-LOCAL_SRC_FILES := $(LOCAL_MODULE)
-LOCAL_PREBUILT_STRIP_COMMENTS := 1
-
-include $(BUILD_PREBUILT)