drm/xe/soc_remapper: Use SoC remapper helper from VSEC code

drm/xe/soc_remapper: Use SoC remapper helper from VSEC code

Since different drivers can use SoC remapper, modify VSEC code to
access SoC remapper via a helper that would synchronize such accesses.

Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Badal Nilawar <badal.nilawar@intel.com>
Link: https://patch.msgid.link/20251223183943.3175941-7-umesh.nerlige.ramappa@intel.com