ARM: mvebu: Add BootROM to Armada 370/XP device tree

In order to access the SoC BootROM, we need to declare a mapping
(through a ranges property). The mbus driver will use this property
to allocate a suitable address decoding window.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts

@@ -27,7 +27,8 @@
 	};
 
 	soc {
-		ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xd0000000 0x100000>;
+		ranges = <MBUS_ID(0xf0, 0x01) 0 0 0xd0000000 0x100000
+			  MBUS_ID(0x01, 0x1d) 0 0 0xfff00000 0x100000>;
 
 		internal-regs {
 			serial@12000 {