Filter out host paths on platform-availability-check errors

If a module, which is installed to both the host and the platform,
fails the platform-availability-check, the build system might use
the host install path to report errors. Filter out the host install
path so that the platform install path is used.

Bug: 169393514
Test: make
Change-Id: Ib39715ffc45cc32e3bd7ce5f2a3725d243f3237f