libqos/ahci: edit wait to be ncq aware
The wait command should check to make sure SACT is clear as well as the Command Issue register. Signed-off-by: NJohn Snow <jsnow@redhat.com> Reviewed-by: NStefan Hajnoczi <stefanha@redhat.com> Message-id: 1435016308-6150-12-git-send-email-jsnow@redhat.com
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