MAINTAINERS: Add miscdevice.h to file list for char/misc drivers.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index e67ea24..a794210 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2193,6 +2193,7 @@
 S:	Supported
 F:	drivers/char/*
 F:	drivers/misc/*
+F:	include/linux/miscdevice.h
 
 CHECKPATCH
 M:	Andy Whitcroft <apw@canonical.com>