kconfig: add include guard to lkc_proto.h

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

diff --git a/scripts/kconfig/lkc_proto.h b/scripts/kconfig/lkc_proto.h
index edd1e617b25c5c3683ba4287f108ccb690608d10..687d8698d801c6878ae56ac9dd29d4e6f1027e68 100644 (file)
--- a/scripts/kconfig/lkc_proto.h
+++ b/scripts/kconfig/lkc_proto.h
@@ -1,4 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 */
+#ifndef LKC_PROTO_H
+#define LKC_PROTO_H
+
 #include <stdarg.h>
 
 /* confdata.c */
@@ -50,3 +53,5 @@ char *expand_one_token(const char **str);
 
 /* expr.c */
 void expr_print(struct expr *e, void (*fn)(void *, struct symbol *, const char *), void *data, int prevtoken);
+
+#endif /* LKC_PROTO_H */