drm/xe/xe3p_lpg: Add new PAT table

drm/xe/xe3p_lpg: Add new PAT table

PAT programming for Xe3p_LPG is more similar to Xe2 and Xe3 than it is
to Xe3p_XPC.  Compared to Xe2/Xe3 we have:

* There's a slight update to the PAT table, where two new indices (18
  and 19) are added to expose a new "WB - Transient App" L3 caching
  mode.

* The PTA_MODE entry must be programmed differently according to the
  media type, and both differ from Xe2.

There are no changes to the underlying registers, so the Xe2 ops can be
re-used for Xe3p.

Bspec: 71582, 74160
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
Link: https://patch.msgid.link/20260206-nvl-p-upstreaming-v3-4-636e1ad32688@intel.com
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>