VersaLogic Menlow based boards hang on reboot unless reboot=bios
is used. Add quirk to reboot through the BIOS.

Tested on at least four boards.
Signed-off-by: NKushal Koolwal <kushalkoolwal@gmail.com>
LKML-Reference: <1298152563-21594-1-git-send-email-kushalkoolwal@gmail.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>