v4.19.13 snapshot.
diff --git a/include/asm-generic/compat.h b/include/asm-generic/compat.h
new file mode 100644
index 0000000..2881945
--- /dev/null
+++ b/include/asm-generic/compat.h
@@ -0,0 +1,3 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+/* This is an empty stub for 32-bit-only architectures */