Promote Vulkan min version check from debug --> fatal

* If a client is attempting to use Skia/Vulkan and is not using the minimum supported driver version (currently 1.1+ for graphite and ganesh), we should fatally abort rather than just having a debug message.

Change-Id: Ifb5ffc2bbd9d5ecc70a46ee32615491570720ceb
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/1018796
Auto-Submit: Nicolette Prevost <nicolettep@google.com>
Reviewed-by: Thomas Smith <thomsmit@google.com>
Commit-Queue: Nicolette Prevost <nicolettep@google.com>