This cl partially implements vkCmdBindDescriptorSets. It allows
binding descriptor sets to the proper pipeline bind point and
descriptor set binding location. Dynamic offsets are not yet
supported.

Bug b/123244275 b/118619338

Change-Id: I91b14b79cb6cf00a4fabb6962938e7f55d5b6c22
Reviewed-on: https://swiftshader-review.googlesource.com/c/24909Tested-by: Alexis Hétu <sugoi@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>