Makes sense. I won't say "looks good" as this file has "slave" all over the place, but I checked and it entered the kernel just before the CodingStyle changed.
SoundWire 1.2.1 introduced the terms "Manager" and "Peripheral", I had a patchset to rename everything maybe two years ago already but it's been difficult to add without getting in the way of development and backports. Maybe a gradual replacement makes more sense, not sure how to go about this.