Improve SHA driver API (#2049)

Co-authored-by: Dominic Fischer <[email protected]>

Author: Dominaezzz

esp-hal/CHANGELOG.md

@@ -13,15 +13,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added `esp_hal::init` to simplify HAL initialisation (#1970, #1999)
 
 ### Changed
+- Make saving and restoring SHA digest state an explicit operation (#2049)
 
 - `Delay::new()` is now a `const` function (#1999)
 - You can now create an `AnyPin` out of an `ErasedPin`. (#2072)
 
 ### Fixed
+- SHA driver can now be safely used in multiple contexts concurrently (#2049)
 
 - Fixed an issue with DMA transfers potentially not waking up the correct async task (#2065)
 
 ### Removed
+- Removed `digest::Digest` implementation from SHA (#2049)
 
 - Removed `NoPinType` in favour of `DummyPin`. (#2068)
 - Removed the `async`, `embedded-hal-02`, `embedded-hal`, `embedded-io`, `embedded-io-async`, and `ufmt` features (#2070)