[Backport esp-hal-1.1.x] ESP32: RSA, SHA fixes

[github-actions]

Description

Backport of #5592 to esp-hal-1.1.x.

[github-actions]

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin backport-5592-to-esp-hal-1.1.x
git worktree add --checkout .worktree/backport-5592-to-esp-hal-1.1.x backport-5592-to-esp-hal-1.1.x
cd .worktree/backport-5592-to-esp-hal-1.1.x
git reset --hard HEAD^
git cherry-pick -x 72d44d0721677f07b35bcdcb716943f56e7b66f6
git push --force-with-lease

[bugadani]

Hmm I'm not sure how the changelog system handles backports

[Copilot]

Pull request overview

Backport of upstream ESP32 crypto accelerator fixes to the esp-hal-1.1.x branch, addressing ESP32-specific SHA and RSA correctness issues around peripheral/interrupt handling and resource ownership.

Changes:

• SHA (ESP32): introduce an explicit hardware/software hasher split so concurrent contexts fall back to software and the SHA peripheral isn’t powered down while a hardware context is active.
• RSA (ESP32): unify peripheral lifetime management into a guard that disables RSA interrupts before the peripheral clock gets stopped.
• HIL test: adjust SHA interleaving test to drop the Sha driver before starting the backend, allowing backend resource release.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
hil-test/src/bin/crypto/sha.rs	Drops the Sha driver in the interleaved rolling-context test to ensure backend resources can be released/reacquired as intended.
esp-hal/src/sha.rs	Adds ESP32-specific Esp32Hasher (hardware guard vs software fallback) and adjusts context drop behavior/flagging for accelerator usage.
esp-hal/src/rsa/mod.rs	Replaces separate guards with a single RsaGuard to ensure interrupts are disabled before peripheral shutdown across chips (including ESP32).

[MabezDev]

Hmm I'm not sure how the changelog system handles backports

I guess we need to find out :D