[3/3] DMA Move API: Introduce DMA buffer objects (#1856)

* [3/3] DMA Move API: Introduce DMA buffer objects

* Remove FlashSafeDma

* Add async HIL test

* Handle set_length(0) correctly

* Fix tx/rx booleans

* Unlucky

* Preserve previous blocking semantics

* Add delay between starting DMA TX and SPI driver

* Update CHANGELOG

* merge tidy

* Add with_buffers builder

---------

Co-authored-by: Dominic Fischer <git@dominicfischer.me>

esp-hal/CHANGELOG.md

@@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Introduce DMA buffer objects (#1856)
 - Added new `Io::new_no_bind_interrupt` constructor (#1861)
 - Added touch pad support for esp32 (#1873, #1956)
 - Allow configuration of period updating method for MCPWM timers (#1898)
@@ -20,6 +21,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Peripheral driver constructors don't take `InterruptHandler`s anymore. Use `set_interrupt_handler` to explicitly set the interrupt handler now. (#1819)
+- Migrate SPI driver to use DMA buffer objects (#1856)
 - Use the peripheral ref pattern for `OneShotTimer` and `PeriodicTimer` (#1855)
 - Improve SYSTIMER API (#1870)
 - DMA: don't require `Sealed` to implement `ReadBuffer` and `WriteBuffer` (#1921)
@@ -44,6 +46,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - This package no longer re-exports the `esp_hal_procmacros::main` macro (#1828)
 - The `AesFlavour` trait no longer has the `ENCRYPT_MODE`/`DECRYPT_MODE` associated constants (#1849)
+- Removed `FlashSafeDma` (#1856)
 
 ## [0.19.0] - 2024-07-15