Prepare for moving sa1100 irq driver to irqchip infrastructure - split
sa1100_init_irq into helper code and irq parts.
Signed-off-by: NDmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Acked-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>