sandbox: Add an additional dummy sync macro

There are some drivers which call a "dmb" for a type of sync. Add that
as well to sandbox.

Signed-off-by: Tom Rini <trini@konsulko.com>

diff --git a/arch/sandbox/include/asm/io.h b/arch/sandbox/include/asm/io.h
index 7295382..cd3f5d6 100644 (file)
--- a/arch/sandbox/include/asm/io.h
+++ b/arch/sandbox/include/asm/io.h
@@ -14,6 +14,7 @@ static inline void sync(void)
 
 #define mb()   sync()
 #define dmb()  sync()
+#define wmb()  sync()
 
 enum sandboxio_size_t {
        SB_SIZE_8,