Add tnd@google.com to Telephony owner list

Bug: 242759738
Test: None.

Change-Id: I1c9463e812c54076a06721f7e418de54035763c7
diff --git a/OWNERS b/OWNERS
index 77db19e..1c2928e 100644
--- a/OWNERS
+++ b/OWNERS
@@ -14,6 +14,7 @@
 sasindran@google.com
 tgunn@google.com
 tjstuart@google.com
+tnd@google.com
 xiaotonj@google.com
 
 # Temporarily reduced the owner during refactoring