[build] Suppress the warning for VLA use

Clang now warns for uses of variable length arrays (VLA) in C++. We
should eventually remove all uses of VLA. For now we only suppress the
warning for targets that use them.

Bug: 135694
Change-Id: I8c9917f61075d5f58f234df9ed7a95f16b2a0c0e
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/mesa/+/937590
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
Fuchsia-Auto-Submit: Petr Hosek <phosek@google.com>
Reviewed-by: Craig Stout <cstout@google.com>
1 file changed