[PATCH] nmk-gpio: use request_irq instead of chained handler

[Will Deacon]

Rabin,

> __nmk_gpio_irq_handler doesn't do anything more that what a normal handler
> does, so it can become one.  This is also needed for changing the GIC
> implementation to a different flow handler.
> 
> Signed-off-by: Rabin Vincent <rabin.vincent at stericsson.com>

mach-nomadik only seems to use the vic. Why does this GPIO handler
need updating?

Will