Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/util/llvm-utils.h b/tools/perf/util/llvm-utils.h
index bf3f3f4..7878a0e 100644
--- a/tools/perf/util/llvm-utils.h
+++ b/tools/perf/util/llvm-utils.h
@@ -6,7 +6,7 @@
 #ifndef __LLVM_UTILS_H
 #define __LLVM_UTILS_H
 
-#include "debug.h"
+#include <stdbool.h>
 
 struct llvm_param {
 	/* Path of clang executable */