[PATCH] Update smc91x driver with ARM Versatile board info

We need to specify a Versatile-specific SMC_IRQ_FLAGS value or the new
generic IRQ layer will complain thusly:

No IRQF_TRIGGER set_type function for IRQ 25 (<NULL>)

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>