i915: Always set the modifier when allocating BOs

With CL:907756 we now pass modifiers around when export to and
importing from the rest of Chrome and we need to give the right answer
when ozone queries the modifier of a bo allocated with use flags.

Bug: 809670, 809666
Change-Id: Iab5ea62d5e0da9ddd90013f559f802270de1e420
Reviewed-on: https://chromium-review.googlesource.com/907848
Commit-Ready: Kristian H. Kristensen <hoegsberg@chromium.org>
Tested-by: Kristian H. Kristensen <hoegsberg@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
1 file changed