Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/arch/arm/Build b/tools/perf/arch/arm/Build
index 41bf61d..36222e6 100644
--- a/tools/perf/arch/arm/Build
+++ b/tools/perf/arch/arm/Build
@@ -1,2 +1,2 @@
-libperf-y += util/
-libperf-$(CONFIG_DWARF_UNWIND) += tests/
+perf-y += util/
+perf-$(CONFIG_DWARF_UNWIND) += tests/