drm/i915/gvt: Add mmio handler for for BXT.

Leverage most SKL/KBL mmio init info and add different mmio to
BXT specific function init_bxt_mmio_info().

Signed-off-by: Colin Xu <colin.xu@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
1 file changed