drm/i915/gen12: Apply recommended L3 hashing mask
The TGL/RKL/DG1/ADL performance tuning guide suggests programming a literal value of 0x2FC0100F for this register. The register's hardware default value is 0x2FC0108F, so this translates to just clearing one bit. Take this opportunity to also clean up the register definition and re-write its existing bits/fields in the preferred notation. Bspec: 31870 Signed-off-by:Matt Roper <matthew.d.roper@intel.com> Reviewed-by:
Gustavo Sousa <gustavo.sousa@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20221201222210.344152-1-matthew.d.roper@intel.com
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