[v4 23/24] sandbox: Add <asm/barrier.h>

[Tom Rini]

Add a mostly empty asm/barrier.h file for sandbox where we define nop() to
be an empty function.

Signed-off-by: Tom Rini <trini at konsulko.com>
---
 arch/sandbox/include/asm/barrier.h | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 arch/sandbox/include/asm/barrier.h

diff --git a/arch/sandbox/include/asm/barrier.h b/arch/sandbox/include/asm/barrier.h
new file mode 100644
index 000000000000..0928a78cbf8b
--- /dev/null
+++ b/arch/sandbox/include/asm/barrier.h
@@ -0,0 +1,3 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#define nop()
-- 
2.34.1