Move the rest of Vulkan driver workarounds into helper function in GrVkCaps

Bug: skia:
Change-Id: Ic9dfc9d09b3fd1d6c8491f6da0d46d03c125a10f
Reviewed-on: https://skia-review.googlesource.com/111440
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
1 file changed