Query of MAX_VERTEX_ATTRIB_STRIDE on some Linux AMD OpenGL drivers
returns 0 even if the context is OpenGL 4.4 and 4.5, which is against
SPEC and will block the implementation of ES3.1 feature Vertex Attrib
Binding.

This patch adds the workaround for this bug by choosing an emulated
value (2048) as the value of MAX_VERTEX_ATTRIB_STRIDE on Linux AMD
OpenGL drivers.

BUG=angleproject:1936

TEST=angle_end2end_tests

Change-Id: I831bda6cb94b2489d09735622150d35aa1948274
Reviewed-on: https://chromium-review.googlesource.com/457254
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>