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anv: Fix some depth buffer sampling cases on ICL+

Nanley Chery requested to merge nchery/mesa:sent/fix/icl-hiz into master

Don't attempt sampling with HiZ if the sampler lacks support for it. On ICL, the HW docs state that sampling with HiZ is not supported and that instances of AUX_HIZ in the RENDER_SURFACE_STATE object will be interpreted as AUX_NONE.

Cc: mesa-stable@lists.freedesktop.org

/cc @aphogat

Edited by Nanley Chery

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