arm: mach-mvebu: add support for Armada 370 and Armada XP with DT

[ben.dooks@codethink.co.uk: ensure error check on of_property_read_u32]
[ben.dooks@codethink.co.uk: use mpic address instead of bus-unit's ]
[ben.dooks@codethink.co.uk: BUG_ON() if the of_iomap() fails for mpic]
[ben.dooks@codethink.co.uk: move mpic per-cpu register base ]
[ben.dooks@codethink.co.uk: number fetch should use irqd_to_hwirq()]

Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Lior Amsalem <alior@marvell.com>
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Yehuda Yitschak <yehuday@marvell.com>
Tested-by: Lior Amsalem <alior@marvell.com>
diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
index 72d39e5..caa2c5e 100644
--- a/arch/arm/mach-mvebu/Kconfig
+++ b/arch/arm/mach-mvebu/Kconfig
@@ -2,6 +2,15 @@
 
 menu "Marvell SOC with device tree"
 
+config MACH_ARMADA_370_XP
+	bool "Marvell Armada 370 and Aramada XP boards"
+	select ARMADA_370_XP_TIMER
+	select CPU_V7
+	help
+
+	  Say 'Y' here if you want your kernel to support boards based on
+	  Marvell Armada 370 or Armada XP with device tree.
+
 endmenu
 
 endif