Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/MANIFEST b/tools/perf/MANIFEST
index 627b7ca..70f1ff4 100644
--- a/tools/perf/MANIFEST
+++ b/tools/perf/MANIFEST
@@ -7,6 +7,8 @@
 tools/lib/api
 tools/lib/bpf
 tools/lib/subcmd
+tools/lib/argv_split.c
+tools/lib/ctype.c
 tools/lib/hweight.c
 tools/lib/rbtree.c
 tools/lib/string.c
@@ -16,3 +18,4 @@
 tools/lib/bitmap.c
 tools/lib/str_error_r.c
 tools/lib/vsprintf.c
+tools/lib/zalloc.c