MAINTAINERS: add wak@ as a maintainer

(From meta-google rev: 07857dbb7eee6d7992710e15eae7d2f013cf18c3)

Change-Id: I49f02ea38f929f9dfbc0e5b059dd135cfeb3c047
Signed-off-by: William A. Kennington III <wak@google.com>
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-google/MAINTAINERS b/meta-google/MAINTAINERS
index fed9b46..6b02bc9 100644
--- a/meta-google/MAINTAINERS
+++ b/meta-google/MAINTAINERS
@@ -43,3 +43,4 @@
 -------------------------
 
 M:  Nancy Yuen <yuenn@google.com> <yuennancy!>
+M:  William Kennington <wak@google.com> <wak-work!>