x86: add Dell XPS710 reboot quirk

commit dd4124a8a06bca89c077a16437edac010f0bb993 upstream.

Dell XPS710 will hang on reboot.  This is resolved by adding a quirk to
set bios reboot.

Signed-off-by: Leann Ogasawara <leann.ogasawara@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Cc: "manoj.iyer" <manoj.iyer@canonical.com>
LKML-Reference: <1236196380.3231.89.camel@emiko>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>