Move the qemu_pipe library into vhal_v2_0

The vhal is the only user of this library and
this library is deprecated.

Bug: 175046060
Test: presubmit
Signed-off-by: Roman Kiryanov <rkir@google.com>
Change-Id: I0948ee43f476b002b2a643cbae95e333bcbc373d
4 files changed