The tests turn out to fail before we have a context current on AMD so we
cannot use isAMD and have to resort to disabling for all Linuxes on the
FYI bots. Using MAYBE like Chrome doesn't seem to work with TEST_P.

BUG=angleproject:892

Change-Id: Ie964168eb0b1d830dd1fd0988869adf39bc2309a
Reviewed-on: https://chromium-review.googlesource.com/284872Reviewed-by: Geoff Lang <geofflang@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>