Enforce dependencies have right architecture

ctx.AddDependency will succeed if the named dependency only has a
single variant, even if that variant is the wrong architecture.
Use ctx.AddVariationDependency(nil, ...) instead, which requires
that all variations of the calling module match the dependency.

Bug: 112707915
Test: no change to out/soong/build.ninja
Test: using a device dependency in a host java module is an error
Change-Id: I70b661a57d4412eb63b8c9841febfb756e9e025d