Asterisk 15 and cisco patch

Probably a dumb question but I cannot seem to find the answer. Do I need to apply the cisco patch from Asterisk 13 into an Asterisk 15 build or has the patch already been built into the V15 fork?

I vaguely recall someone, I don’t know whom, was carrying an out-of-tree Cisco related thing at some point in the past.

I have no recollection that they pushed anything into Gerrit that would have lead to its inclusion in 15.