drm/xe/nvlp: Add NVL-P platform definition

drm/xe/nvlp: Add NVL-P platform definition

Add platform definition along with device IDs for NVL-P.  Here is the
list of device descriptor fields and associated Bspec references:

  .dma_mask_size (Bspec 74198)
  .has_cached_pt (Bspec 71582)
  .has_display (Bspec 74196)
  .has_flat_ccs (Bspec 74110)
  .has_page_reclaim_hw_assist (Bspec 73451)
  .max_gt_per_tile (Bspec 74196)
  .va_bits (Bspec 74198)
  .vm_max_level (Bspec 59507)

v2:
  - Add list of descriptor fields and Bspec references. (Matt)

Signed-off-by: Shekhar Chauhan <shekhar.chauhan@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patch.msgid.link/20260206-nvl-p-upstreaming-v3-12-636e1ad32688@intel.com
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>