irqchip: Add brcm, bcm6345-l1-intc device tree binding

irqchip: Add brcm, bcm6345-l1-intc device tree binding

Add device tree binding for the BCM6345 interrupt controller.

This controller is similar to the SMP-capable BCM7038 and
the BCM3380 but with packed interrupt registers.

Signed-off-by: Simon Arlott <[email protected]>
Acked-by: Rob Herring <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Jason Cooper <[email protected]>
Cc: Marc Zyngier <[email protected]>
Cc: Florian Fainelli <[email protected]>
Cc: Kevin Cernekee <[email protected]>
Cc: Pawel Moll <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Ian Campbell <[email protected]>
Cc: Kumar Gala <[email protected]>
Cc: Jonas Gorski <[email protected]>
Cc: Linux Kernel Mailing List <[email protected]>
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/11804/
Signed-off-by: Ralf Baechle <[email protected]>