intel/compiler: Misc URB patches for Xe2

Merged Jordan Justen requested to merge jljusten/mesa:xe2-compiler-urb into main

The MR currently includes the patches from !25020 (merged), since that MR will have to merge first. There is a marker patch to indicate which patches are specific to this MR.

Includes patches from @idr, @mslusarz, @jljusten, @kwg, @llandwerlin, @cmarcelo and @currojerez

Edited by Jordan Justen

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