BugLink: http://bugs.launchpad.net/bugs/838402

The Dell Latitude E6220 doesn't reboot unless reboot=pci is set.
Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Seth Forshee <seth.forshee@canonical.com>