Merge changes from topic "allwinner_h616" into integration

* changes:
allwinner: H616: Add reserved-memory node to DT
allwinner: Add Allwinner H616 SoC support
allwinner: Add H616 SoC ID
all

Merge changes from topic "allwinner_h616" into integration

* changes:
allwinner: H616: Add reserved-memory node to DT
allwinner: Add Allwinner H616 SoC support
allwinner: Add H616 SoC ID
allwinner: Express memmap more dynamically
allwinner: Move sunxi_cpu_power_off_self() into platforms
allwinner: Move SEPARATE_NOBITS_REGION to platforms
doc: allwinner: Reorder sections, document memory mapping

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allwinner: Add Allwinner H616 SoC support

The new Allwinner H616 SoC lacks the management controller and the secure
SRAM A2, so we need to tweak the memory map quite substantially:
We run BL31 in DR

allwinner: Add Allwinner H616 SoC support

The new Allwinner H616 SoC lacks the management controller and the secure
SRAM A2, so we need to tweak the memory map quite substantially:
We run BL31 in DRAM. Since the DRAM starts at 1GB, we cannot use our
compressed virtual address space (max 256MB) anymore, so we revert to
the full 32bit VA space and use a flat mapping throughout all of it.

The missing controller also means we need to always use the native PSCI
ops, using the CPUIDLE hardware, as SCPI and suspend depend on the ARISC.

Change-Id: I77169b452cb7f5dc2ef734f3fc6e5d931749141d
Signed-off-by: Andre Przywara <andre.przywara@arm.com>

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