Vulkan: Don't enable Qualcomm workarounds on OSS driver Bug: b/217265716 Change-Id: I09cf38a36f8297912f0c26867155cf4f9e145919 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3689810 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Yiwei Zhang <zzyiwei@chromium.org> Reviewed-by: Chia-I Wu <olv@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@google.com>