intel: Enable simple PS hint

Sagar Ghuge requested to merge sagarghuge/mesa:wip/ps_hint into main

According to Bspec:

This field is set by PS compiler to indicate if PS is simple enough and therefore peak demand for pixel TPT may be required. Simple heuristics like 100 GEN ISA instructions in the PS can be used to set this bit.

This is supposed to improve performance.

Edited by Sagar Ghuge

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