Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/util/zlib.c b/tools/perf/util/zlib.c
index 902ce63..78d2297 100644
--- a/tools/perf/util/zlib.c
+++ b/tools/perf/util/zlib.c
@@ -1,17 +1,15 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <fcntl.h>
 #include <stdio.h>
+#include <string.h>
 #include <unistd.h>
 #include <sys/stat.h>
 #include <sys/mman.h>
 #include <zlib.h>
 #include <linux/compiler.h>
-#include <unistd.h>
+#include <internal/lib.h>
 
 #include "util/compress.h"
-#include "util/util.h"
-#include "util/debug.h"
-
 
 #define CHUNK_SIZE  16384