drm/i915/gt: Cover rest of SVG unit MCR registers

CHICKEN_RASTER_{1,2} got overlooked with the move done in commit
a9e69428 ("drm/i915: Define MCR registers explicitly"). Registers
from the SVG unit became multicast as of Xe_HP graphics.

BSpec: 66534
Fixes: a9e69428 ("drm/i915: Define MCR registers explicitly")
Signed-off-by: Gustavo Sousa <gustavo.sousa@intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230105133701.19556-1-gustavo.sousa@intel.com