riscv: add generic link for <asm/atomic.h>

Add a link from <asm/atomic.h> to the generic one to allow
things like ubifs to be built. This can be extended with
riscv AMO ops at a later date.

Signed-off-by: Ben Dooks <ben.dooks@sifive.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>

diff --git a/arch/riscv/include/asm/atomic.h b/arch/riscv/include/asm/atomic.h
new file mode 100644 (file)
index 0000000..f541fb4
--- /dev/null
+++ b/arch/riscv/include/asm/atomic.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2023 SiFive, Inc.
+ */
+
+#ifndef __RISCV_ATOMIC_H
+#define __RISCV_ATOMIC_H
+
+/* use the generic asm/atomic.h until we define a better one */
+
+#include <asm/system.h>
+#include <asm-generic/atomic.h>
+
+#endif