- Replaced BlendFactor with VkBlendFactor
- Replaced BlendOperation with VkBlendOp

Bug b/118386749

Change-Id: I25031c044af05b1922d031db9e82c52bb785def5
Reviewed-on: https://swiftshader-review.googlesource.com/c/22850Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>