Move current sa11x0 IRQ driver to the irqchip subsystem.
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>