Add a static dependency on libbase.

Used by libziparchive.

Change-Id: I120494b620c72b36a725b01f1f274f5dc862a9a3
diff --git a/tools/aapt/Android.mk b/tools/aapt/Android.mk
index 9956bd7..dc3ad25 100644
--- a/tools/aapt/Android.mk
+++ b/tools/aapt/Android.mk
@@ -64,7 +64,8 @@
     libutils \
     libcutils \
     libexpat \
-    libziparchive-host
+    libziparchive-host \
+    libbase
 
 aaptCFlags := -DAAPT_VERSION=\"$(BUILD_NUMBER)\"
 aaptCFlags += -Wall -Werror