graphics_PiglitBVT: update pinetrail expectations.

This is for the new Mesa 11.0.2 drop
https://chromium-review.googlesource.com/#/c/303547/

BUG=chromium:552566
TEST=Ran PiglitBVT on x86-generic alex.

Change-Id: If9fdbcbbb8b332f5394b082b0744205cdcb8cef5
Reviewed-on: https://chromium-review.googlesource.com/312457
Reviewed-by: Ilja Friedel <ihf@chromium.org>
Tested-by: Ilja Friedel <ihf@chromium.org>
23 files changed