Add mathieuc to owners

So that I can cherry-pick CLs.

Test: untested
Change-Id: Idff120036c5d54189c31b5e908efe4bd4446021b
diff --git a/cmds/installd/OWNERS b/cmds/installd/OWNERS
index 50440f1..5d4f176 100644
--- a/cmds/installd/OWNERS
+++ b/cmds/installd/OWNERS
@@ -1,7 +1,8 @@
 set noparent
 
-calin@google.com
 agampe@google.com
+calin@google.com
 jsharkey@android.com
-toddke@google.com
+mathieuc@google.com
 ngeoffray@google.com
+toddke@google.com