Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/arch/sparc/Build b/tools/perf/arch/sparc/Build
index 54afe4a..e4e5f33 100644
--- a/tools/perf/arch/sparc/Build
+++ b/tools/perf/arch/sparc/Build
@@ -1 +1 @@
-libperf-y += util/
+perf-y += util/