Inclusion of SPI bus contention fix from `release/v2.x` branch

[and3rson]

We have recently merged a backport of an important SPI bus fix into ESP32 Arduino core (version 2.x): espressif/arduino-esp32#10697

This fix targets v2.x of ESP32 Arduino core.
However, version 2.x is no longer supported/released, so the only way to use the latest 2.x version (as pointed by me-no-dev and Jason2866 here) is to target release/2.x branch as such:

platform_packages =
    framework-arduinoespressif32 @ https://github.com/espressif/arduino-esp32/archive/refs/heads/release/v2.x.zip

This is error-prone since it implicitly overrides the default framework version from platformio and requires manual edits to platformio.ini, and could generally be confusing for beginners. So it seems there are two solutions:

1. Define platform_packages on a board level (specifically we're interested in Lilka v2 which is severely affected and would benefit a lot from the SPI bus fix).
   I'm not sure if this is generally possible though.
2. Update espressif32 platform to target release/v2.x branch. This would be the preferred way to go, since it would solve SPI bus contention issues for everyone who's using PlatformIO with ESP32-S3/C3.

Unfortunately, due to v2.x not being maintained anymore, there won't be v2.0.19 release - the last one is v2.0.18 which does not include our SPI fix, so it's not possible to wait for the new release and update PlatformIO platform. So it seems that the best way is to target release/v2.x branch.

Please let me know what you think. Any thoughts are welcome!

[valeros]

Hi @and3rson, thanks for reporting. I've updated the default framework-arduinoespressif32 package with some cherry-picked patches from the release/v2.x branch. You can run pio pkg update -g -p espressif32 on your machine to pull the latest changes.

[and3rson]

@valeros This is wonderful, thank you!