Add dependency to version script when linking stub libraries

This isn't an effective issue with local builds currently, since the
version script is generated from the same rule as the sources used to
compile the objects that are also used in the link command. But if we
ever separated those paths or adopted restat, we could miss this
dependency.

This is also required for my RBE build to actually expose this file to
the link step.

Test: treehugger
Change-Id: I32bbb18cf7edddc88759d4f445d081868f3e9b44