Rename vulkan memory allocator buffer usage enum values to be more specific.

These renames need to be staged so we can update chrome which has their
own implementation of GrVkMemoryAllocator.

Bug: skia:11207
Change-Id: Ic68927217fe0314cdba1b1aa7ffd80261cb5e646
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/368856
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
3 files changed