Revert "This doesn't always build, so completely disable it."

This reverts commit 245b75880b4a7ad329b53ab9ee8a12d4fafee368.
diff --git a/Android.mk b/Android.mk
index 66e716a..4b19765 100644
--- a/Android.mk
+++ b/Android.mk
@@ -12,6 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-#ifeq ($(TARGET_SIMULATOR),false)
-#    include $(call all-subdir-makefiles)
-#endif
+ifeq ($(TARGET_SIMULATOR),false)
+    include $(call all-subdir-makefiles)
+endif