HostConnection: skip VIRTIO_GPU_ADDRESS_SPACE on Fuchsia

We don't implement virtio gpu address space stream for Fuchsia,
so this code path should be skipped at build time; otherwise
it will cause a build error when using -O0.

TEST=fx set workstation.x64 --args 'optimize = "none"'

Change-Id: I92c889fcae0d6596dd874a20a7faeddaeaf14d21
1 file changed