Convert from shared library to static library

Change-Id: I88516dfe5321da467b9d3630d8d4183860f881af
diff --git a/libFLAC/Android.mk b/libFLAC/Android.mk
index 42f33f9..471440c 100644
--- a/libFLAC/Android.mk
+++ b/libFLAC/Android.mk
@@ -31,4 +31,4 @@
 
 LOCAL_MODULE_TAGS := optional
 
-include $(BUILD_SHARED_LIBRARY)
+include $(BUILD_STATIC_LIBRARY)