The first step in introducing the GSCCS is to add all the basic defs for
it (name, mmio base, class/instance, lrc size etc).

Bspec: 60149, 60421, 63752
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://lore.kernel.org/r/20230817201831.1583172-3-daniele.ceraolospurio@intel.comSigned-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>