MAINTAINERS: add i8042.h and libps2.h to INPUT section

Add i8042.h and libps2.h to "INPUT (KEYBOARD, MOUSE, JOYSTICK,
TOUCHSCREEN) DRIVERS" section so that get_maintainers.pl script
will pick them up and patches affecting them will be sent to the
right place.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

MAINTAINERS

@@ -10883,8 +10883,10 @@ F:	Documentation/input/
 F:	drivers/input/
 F:	include/dt-bindings/input/
 F:	include/linux/gameport.h
+F:	include/linux/i8042.h
 F:	include/linux/input.h
 F:	include/linux/input/
+F:	include/linux/libps2.h
 F:	include/linux/serio.h
 F:	include/linux/uinput.h
 F:	include/uapi/linux/gameport.h