Update Linux to v5.4.2

Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/Documentation/input/multi-touch-protocol.rst b/Documentation/input/multi-touch-protocol.rst
index 6be7034..307fe22 100644
--- a/Documentation/input/multi-touch-protocol.rst
+++ b/Documentation/input/multi-touch-protocol.rst
@@ -23,7 +23,7 @@
 describes how to send updates for individual contacts via event slots.
 
 .. note::
-   MT potocol type A is obsolete, all kernel drivers have been
+   MT protocol type A is obsolete, all kernel drivers have been
    converted to use type B.
 
 Protocol Usage