Updated CHANGELOG.md

Author: pellico

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - Use `critical_section::with` instead of `interrupt::free` for `Peripherals::take`.
 - Bring documentation on how to generate MSP430 PACs up to date (in line with
   [msp430_svd](https://github.com/pftbest/msp430_svd)).
+- Prefix submodule path with self:: when reexporting submodules to avoid ambiguity in crate path.
 
 ## [v0.25.1] - 2022-08-22