[Debian-med-packaging] Bug#864378: falcon accidentally still built on x32

[Adrian Bunk]

Source: falcon
Version: 1.8.6-1.1
Severity: normal

Adam Borowski noticed that the any-amd64 I used in the
architecture list is not correct since it includes x32.

Please change this from "any-amd64" to "amd64 kfreebsd-amd64"
in the next (post-stretch) upload