... by casting semaphore to a VkBinarySemaphore.

Bug: b/147738281
Test: build and launch Cuttlefish in AOSP
Change-Id: I3766cb0fb8bf029c426d43c12cc6754632edcb2b
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/53588Tested-by: Jason Macnak <natsu@google.com>
Presubmit-Ready: Jason Macnak <natsu@google.com>
Commit-Queue: Jason Macnak <natsu@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>