Update write after approval list

2018-08-22  Andrew Benson  <abensonca@gmail.com>

        * MAINTAINERS: Add self to write after approval list.

From-SVN: r263783

MAINTAINERS

@@ -310,6 +310,7 @@ Charles Baylis					<charles.baylis@linaro.org>
 Tejas Belagod					<tejas.belagod@arm.com>
 Jon Beniston					<jon@beniston.com>
 Andrew Bennett					<andrew.bennett@imgtec.com>
+Andrew Benson					<abensonca@gmail.com>
 Daniel Berlin					<dberlin@dberlin.org>
 Jan Beulich					<jbeulich@novell.com>
 David Billinghurst				<David.Billinghurst@riotinto.com>