Update notes for submitted changes

* channel.c: Resolve issue with receiving SIP INFO packets for DTMF

43/d4c0e3c9ac27ea0b3cd49085e72465b63e3014

@@ -0,0 +1,9 @@
+Code-Review+1: Joshua Colp <jcolp@digium.com>
+Code-Review+1: Benjamin Keith Ford <bford@digium.com>
+Code-Review+2: Kevin Harwell <kharwell@digium.com>
+Verified+2: George Joseph <gjoseph@digium.com>
+Submitted-by: George Joseph <gjoseph@digium.com>
+Submitted-at: Fri, 06 Dec 2019 12:40:42 -0600
+Reviewed-on: https://gerrit.asterisk.org/c/asterisk/+/13341
+Project: asterisk
+Branch: refs/heads/16