www/chromium: Add support for audio recording using sndio

PR: 238869
Submitted by: Zielonka Michal <zielonka.michal@gmail.com>, tobik
Obtained from: https://github.com/t6/freebsd-ports-sndio/commit/f213ba25a3460ed6f8e858f04f5592fca8edb7d8
MFH: 2019Q3