Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/tools/perf/util/cs-etm-decoder/Build b/tools/perf/util/cs-etm-decoder/Build
index bc22c39..216cb17 100644
--- a/tools/perf/util/cs-etm-decoder/Build
+++ b/tools/perf/util/cs-etm-decoder/Build
@@ -1 +1 @@
-libperf-$(CONFIG_AUXTRACE) += cs-etm-decoder.o
+perf-$(CONFIG_AUXTRACE) += cs-etm-decoder.o