drm/xe: Add PVC gt workarounds

Synchronize with i915 the PVC gt workarounds as of committ
commit 4d14d771

 ("drm/i915/selftest: Fix ktime_get() and h/w
access order").

v2: Add masked flag to XEHPC_LNCFMISCCFGREG0 (Matt Roper)

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20230314003012.2600353-7-lucas.demarchi@intel.com


Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>