Add mgalhardo@ to SystemUI OWNERS

Change-Id: Iddc33b0ec9a8bd464b131e16bc64dcc774cb5d87
Test: N/A
Bug: N/A
diff --git a/packages/SystemUI/OWNERS b/packages/SystemUI/OWNERS
index 402d73c..811b409 100644
--- a/packages/SystemUI/OWNERS
+++ b/packages/SystemUI/OWNERS
@@ -55,6 +55,7 @@
 madym@google.com
 mankoff@google.com
 mateuszc@google.com
+mgalhardo@google.com
 michaelmikhil@google.com
 michschn@google.com
 mkephart@google.com