Add blacklist to vk win intel for skp

This blacklist the desk_skbug6850overlay2 which is causing llvm to crash
on the intel win bot when running vulkan.

Bug: skia:6863
Change-Id: I2c3ca597a3312e6c0a1bacae0056fcb1c19679bf
Reviewed-on: https://skia-review.googlesource.com/24264
Reviewed-by: Eric Boren <borenet@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
2 files changed