drm/i915/gvt: Introduce page table type of current level in GTT type enumerations

Need to figure out page table type of current level by GTT entry type
during getting a scratch page table entry.

Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
This commit is contained in:
Zhi Wang 2017-10-10 17:19:30 +08:00 • committed by Zhenyu Wang
commit 054f4eba2a