b837c3e7b0
Non-canonical GPUVM aperture doesn't exist on dGPUs. Remove comments and code that say otherwise. Fix alignment of GPUVM aperture for gfx801. Requires the same workaround as gfx802. It's not used for anything on gfx801 yet, but will be soon. Change-Id: I88607fe7b340081cc0715b85f28fdbf5f1bb0ad7