Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/scripts/gdb/linux/tasks.py b/scripts/gdb/linux/tasks.py
index f6ab3cc..0301dc1 100644
--- a/scripts/gdb/linux/tasks.py
+++ b/scripts/gdb/linux/tasks.py
@@ -79,6 +79,7 @@
                 pid=task["pid"],
                 comm=task["comm"].string()))
 
+
 LxPs()
 
 
@@ -134,4 +135,5 @@
         else:
             raise gdb.GdbError("No task of PID " + str(pid))
 
+
 LxThreadInfoByPidFunc()