graphics_dEQP: update blacklist.
graphics_dEQP: update blacklist.

This adds initial failures from graphics_dEQP.gles2.performance for
mccloud and stumpy.

TEST=pylint
BUG=chromium:46102

Change-Id: I4d08e310a04377068dd676e821e83083bae7afa0
Reviewed-on: https://chromium-review.googlesource.com/263625
Trybot-Ready: Ilja Friedel <b010298bf337e0ed6c74b159ac596d0ac28d2598@chromium.org>
Tested-by: Ilja Friedel <b010298bf337e0ed6c74b159ac596d0ac28d2598@chromium.org>
Reviewed-by: Dominik Behr <e7ce582c7d62326af1f467203edc40f69ba4f78f@chromium.org>

chadversary/deqp,chadversary/deqp,chadversary/deqp,chadversary/deqp,chadversary/deqp,chadversary/deqp