MAINTAINERS: adjust input-related patterns

Add pattens for input-related headers to MAINTAINERS file.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/MAINTAINERS b/MAINTAINERS
index 1a2f8f5..d7f7a96 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3432,6 +3432,8 @@
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git
 S:	Maintained
 F:	drivers/input/
+F:	include/linux/input.h
+F:	include/linux/input/
 
 INPUT MULTITOUCH (MT) PROTOCOL
 M:	Henrik Rydberg <rydberg@euromail.se>