Timeline semaphores were added to all the VkPhysicalDevice.cpp case-
lists that needed it, but when users signaled they wanted the feature in
vkCreateDevice, they could get an assert from a missing feature.

Bug: b/147738281
Change-Id: I1871843d0b901347e9636e41e01c96e5e191fc8c
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/53408Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Sean Risser <srisser@google.com>
Commit-Queue: Sean Risser <srisser@google.com>