Revert "Revert "Add filegroup support to notice property.""

This reverts commit 5529a705de82daca387d98c761ea08a5597d68fc.

Reason for revert: ALLOW_MISSING_DEPENDENCIES is now supported for notice filegroups.

Change-Id: I233642b0e8fc633a216b16b67ec7fad759c86bfd
diff --git a/Android.bp b/Android.bp
new file mode 100644
index 0000000..ba73ad6
--- /dev/null
+++ b/Android.bp
@@ -0,0 +1,5 @@
+filegroup {
+    name: "mingw-libwinpthread-notice",
+    srcs: ["licenses/mingw-w64-svn-r5861/mingw-w64-libraries/winpthreads/COPYING"],
+}
+