drm/xe: Move xe drm_ras initialization

drm/xe: Move xe drm_ras initialization

Move xe drm_ras registration to RAS initialization flow and keep
hardware error initialization for processing errors reported
via irq.

Move soc remapper and system controller initialization
up in xe_device_probe as RAS initialization depends on both.

Cc: Anoop Vijay <anoop.c.vijay@intel.com>
Cc: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Raag Jadav <raag.jadav@intel.com>
Link: https://patch.msgid.link/20260618060633.2790109-13-riana.tauro@intel.com
Signed-off-by: Riana Tauro <riana.tauro@intel.com>