in init_skil_mmio_info, replaced register address with the known
name from i915_reg.h definition to improve code readbility.
Reviewed-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NXiaolin Zhang <xiaolin.zhang@intel.com>
Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>