add Intel Xe driver support
The Xe driver's now in the 6.8 kernel and so it seems to make sense to build mesa with support for it.
If you have a GPU that supports Intel's new Xe driver, you can switch to it by adding the following to your kernel args:
i915.force_probe=!56a1 xe.force_probe=56a1
(where 56a1
is the second part of the PCI ID for an Intel Arc A750 GPU for example).