Transfer ownership of backup lib to current B+R Platform team.

Test: Infra changes

Change-Id: I3d37fee446655b59b6b4837aaf9f8073d49d78db

OWNERS

diff --git a/OWNERS b/OWNERS
index d691900..ed18b61 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,2 +1,7 @@
 # used by the Dialer app
 include platform/packages/apps/Dialer:/OWNERS
+
+martinoh@google.com
+rthakohov@google.com
+hadfieldp@google.com
+jstemmer@google.com