As I will be working on X86 intrinsic equivalents for PowerPC64LE

adding myself to Write After Approval list.

2017-05-11  Steven Munroe  <munroesj@gcc.gnu.org>

	* MAINTAINERS: Add myself to Write After Approval section.

From-SVN: r247913

MAINTAINERS

@@ -508,6 +508,7 @@ James A. Morrison				<phython@gcc.gnu.org>
 Brooks Moses					<bmoses@google.com>
 Dirk Mueller					<dmueller@suse.de>
 Phil Muldoon					<pmuldoon@redhat.com>
+Steven Munroe					<munroesj@linux.vnet.ibm.com>
 Szabolcs Nagy					<szabolcs.nagy@arm.com>
 Quentin Neill					<quentin.neill.gnu@gmail.com>
 Adam Nemet					<adambnemet@gmail.com>