drm/xe/xe2lpg: Extend Wa_14020338487

Wa_14020338487 also applies to Xe2_LPG. Replicate the existing entry to
one specific for Xe2_LPG.

Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240417212501.312346-1-gustavo.sousa@intel.com