drm/xe/xe3p_lpg: Drop unnecessary tuning settings

drm/xe/xe3p_lpg: Drop unnecessary tuning settings

From Xe3p onward, the desired settings are now the hardware's
default values and the driver does not need to program them explicitly.

Since 35.xx seems to be the starting point for "Xe3p" version numbers;
we'll adjust the bounds of the old programming to stop at 34.99.  Even
though there's no platform with version 35.00 at the moment, this is
simplest in case one does show up in the future.

Bspec: 72161, 59928, 59930
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-v3-8-636e1ad32688@intel.com
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>