1* rWTM BIU Mailbox driver for Armada 37xx
 2
 3Required properties:
 4- compatible:	must be "marvell,armada-3700-rwtm-mailbox"
 5- reg:		physical base address of the mailbox and length of memory mapped
 6		region
 7- interrupts:	the IRQ line for the mailbox
 8- #mbox-cells:	must be 1
 9
10Example:
11	rwtm: mailbox@b0000 {
12		compatible = "marvell,armada-3700-rwtm-mailbox";
13		reg = <0xb0000 0x100>;
14		interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>;
15		#mbox-cells = <1>;
16	};