pasemi_mac: flags as passed to spin_*_irqsave() should be unsigned long

pasemi_mac: flags as passed to spin_*_irqsave() should be unsigned long.

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>