CHANGELOG entry

Author: devnexen

CHANGELOG.md

@@ -29,6 +29,8 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 - Removed `flock` from `::nix::fcntl` on Solaris. ([#2082](https://github.com/nix-rust/nix/pull/2082))
 - Use I/O safety with `copy_file_range`, and expose it on FreeBSD.
   (#[1906](https://github.com/nix-rust/nix/pull/1906))
+- Added `SO_TS_CLOCK` for FreebSD to `nix::sys::socket::sockopt`.
+  ([#2093](https://github.com/nix-rust/nix/pull/2093))
 
 ### Changed