drm/xe/gsc: add Battlemage support

Add heci_cscfi support bit for new CSC engine type.
It has same mmio offsets as DG2 GSC but separate interrupt flow.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240708084906.2827024-1-alexander.usyskin@intel.com