ARM: 64-bit DT updates for v4.11

ARM64 DT updates are fairly small this time, only two new SoCs and a handful
of new machines get added, all of them similar to other hardware we already
support.

New SoC:
  - HiSilicon Kirin960/Hi3660 and HiKey960 development board
  - NXP LS1012a with three reference boards
    http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/qoriq-layerscape-arm-processors/qoriq-layerscape-1012a-low-power-communication-processor:LS1012A

New development board:
  - Banana Pi M64, based on Allwinner A64
    http://www.banana-pi.org/m64.html
  - SolidRun MACCHIATOBin based on Marvell Armada 8K
    https://www.solid-run.com/marvell-armada-family/armada-8040-community-board/
  - Broadcom BCM958712DxXMC NorthStar2 reference board (another one)

A lot of platforms improve support for existing machines by adding
extra devices for which a binding and driver is availabe:

Allwinner: MMC, USB
ARM Juno: Coresight, STM
Broadcom: NS2 GICv2m irqchip and PCIe
Marvell: Armada 3700 SPI, I2C, ethernet switch
Mediatek: MT8173 thermal
NXP i.MX: LS1046A thermal
Qualcomm: coresight on MSM8916, HDMI, WCNSS, SCM
Renesas: r8a779[56] thermal, powerdomain, ethernet, sound, pwm, can, can fd
Rockchip: thermal, eDP, pinctrl enhancements
Samsung: TM2 touchkey, Exynos5433 HDMI and power management improvements
UniPhier: SD reset, eMMC controller
ZTE: oppv2 cpufreq
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