sandbox: Add missing header file
This file uses __aligned so should include the header which defines
that.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/sandbox/include/asm/sections.h b/arch/sandbox/include/asm/sections.h
index 88837bb..5e15774 100644
--- a/arch/sandbox/include/asm/sections.h
+++ b/arch/sandbox/include/asm/sections.h
@@ -10,6 +10,7 @@
#define __SANDBOX_SECTIONS_H
#include <asm-generic/sections.h>
+#include <linux/compiler_attributes.h>
struct sandbox_cmdline_option;