Add fix to CHANGELOG

Author: jr-oss

CHANGELOG.md

@@ -21,6 +21,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 ### Fixed
 
 - Missing `MosiPin` impl for `PB5` ([#322])
+- Read valid data from data register even if reception of next character
+  has started ([#317])
 
 ## [v0.9.0] - 2022-03-06
 
@@ -562,6 +564,7 @@ let clocks = rcc
 
 [#322]: https://github.com/stm32-rs/stm32f3xx-hal/pull/322
 [#318]: https://github.com/stm32-rs/stm32f3xx-hal/pull/318
+[#317]: https://github.com/stm32-rs/stm32f3xx-hal/pull/317
 [#314]: https://github.com/stm32-rs/stm32f3xx-hal/pull/314
 [#309]: https://github.com/stm32-rs/stm32f3xx-hal/pull/309
 [#308]: https://github.com/stm32-rs/stm32f3xx-hal/pull/308