[Intel-gfx] Fixes that failed to apply to v5.9-rc5

[Jani Nikula]

Now that we have drm-intel-gt-next merged, we also get the gt fixes.

The following commits failed to cherry-pick:

56f581bad4bf ("drm/i915/gt: Only transfer the virtual context to the new engine if active")
b3786b29379c ("drm/i915/gt: Distinguish the virtual breadcrumbs from the irq breadcrumbs")
2e4c6c1a9db5 ("drm/i915: Remove i915_request.lock requirement for execution callbacks")

Please also check the ones that did cherry-pick fine; I've pushed them
out to drm-intel-fixes.

BR,
Jani.

-- 
Jani Nikula, Intel Open Source Graphics Center