The inlined-at isn't currently used, but this unblocks tests that emit this instruction.

Bug: b/145351270
Change-Id: I787e0de3d7ede8225ad3a86544f867559ea9c387
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/42095
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Tested-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>