arm64: mvebu: Add support for the Marvell Armada 3700 SoC

The Armada 3700 integrates the following interfaces (not complete list):
- Dual Cortex-A53 ARMv8
- USB 3.0
- SATA 3.0
- PCIe 2.0
- 2 x Gigabit Ethernet 1Gbps / 2.5Gbps
- ...

This patch adds basic support for this ARMv8 based SoC into U-Boot.
Future patches will integrate other device drivers and board support
for the Marvell DB-88F3720 development board.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Nadav Haklai <nadavh@marvell.com>
Cc: Kostya Porotchkin <kostap@marvell.com>
Cc: Wilson Ding <dingwei@marvell.com>
Cc: Victor Gu <xigu@marvell.com>
Cc: Hua Jing <jinghua@marvell.com>
Cc: Terry Zhou <bjzhou@marvell.com>
Cc: Hanna Hawa <hannah@marvell.com>
Cc: Haim Boot <hayim@marvell.com>
diff --git a/arch/arm/mach-mvebu/Makefile b/arch/arm/mach-mvebu/Makefile
index ac009a3..07dc16c 100644
--- a/arch/arm/mach-mvebu/Makefile
+++ b/arch/arm/mach-mvebu/Makefile
@@ -1,16 +1,22 @@
 #
-# Copyright (C) 2014-2015 Stefan Roese <sr@denx.de>
+# Copyright (C) 2014-2016 Stefan Roese <sr@denx.de>
 #
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
+ifdef CONFIG_ARM64
+
+obj-$(CONFIG_ARMADA_3700) += armada3700/
+
+else # CONFIG_ARM64
+
 ifdef CONFIG_KIRKWOOD
 
 obj-y	= dram.o
 obj-y	+= gpio.o
 obj-y	+= timer.o
 
-else
+else # CONFIG_KIRKWOOD
 
 obj-y	= cpu.o
 obj-y	+= dram.o
@@ -18,7 +24,7 @@
 obj-$(CONFIG_ARMADA_375) += ../../../drivers/ddr/marvell/axp/xor.o
 obj-$(CONFIG_ARMADA_38X) += ../../../drivers/ddr/marvell/a38x/xor.o
 obj-$(CONFIG_ARMADA_XP) += ../../../drivers/ddr/marvell/axp/xor.o
-endif
+endif # CONFIG_SPL_BUILD
 obj-y	+= gpio.o
 obj-y	+= mbus.o
 obj-y	+= timer.o
@@ -28,4 +34,5 @@
 obj-$(CONFIG_ARMADA_38X) += serdes/a38x/
 obj-$(CONFIG_ARMADA_XP) += serdes/axp/
 
-endif
+endif # CONFIG_KIRKWOOD
+endif # CONFIG_ARM64