This adds an irqchip driver and corresponding devicetree binding for the
secondary interrupt controllers based on Synopsys DesignWare IP dw_apb_ictl.
Signed-off-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Reviewed-by: NMark Rutland <mark.rutland@arm.com>
Reviewed-by: NJisheng Zhang <jszhang@marvell.com>
Reviewed-by: NThomas Gleixner <tglx@linutronix.de>