plat: marvell: armada: a3k: Add new compile option A3720_DB_PM_WAKEUP_SRC

This new compile option is only for Armada 3720 Development Board. When
it is set to 1 then TF-A will setup PM wake up src c

plat: marvell: armada: a3k: Add new compile option A3720_DB_PM_WAKEUP_SRC

This new compile option is only for Armada 3720 Development Board. When
it is set to 1 then TF-A will setup PM wake up src configuration.

By default this new option is disabled as it is board specific and no
other A37xx board has PM wake up src configuration.

Currently neither upstream U-Boot nor upstream Linux kernel has wakeup
support for A37xx platforms, so having it disabled does not cause any
issue.

Prior this commit PM wake up src configuration specific for Armada 3720
Development Board was enabled for every A37xx board. After this change it
is enabled only when compiling with build flag A3720_DB_PM_WAKEUP_SRC=1

Signed-off-by: Pali Rohár <pali@kernel.org>
Change-Id: I09fea1172c532df639acb3bb009cfde32d3c5766

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plat: marvell: armada: modify PLAT_FAMILY name for 37xx SoCs

The Marvell Armada 37xx SoCs-based platforms contain a bit
awkward directory structure because the currently only one
supported PLAT and

plat: marvell: armada: modify PLAT_FAMILY name for 37xx SoCs

The Marvell Armada 37xx SoCs-based platforms contain a bit
awkward directory structure because the currently only one
supported PLAT and PLAT_FAMILY are the same. Modify the latter
to 'a3k' in order to improve it and keep plat/marvell/armada
tree more consistent:

plat/marvell/
├── armada
│   ├── a3k
│   │   ├── a3700

[...]

│   ├── a8k
│   │   ├── a70x0

[...]

Change-Id: I693a6ef88e6ce49a326a3328875c90bbc186066a
Signed-off-by: Marcin Wojtas <mw@semihalf.com>

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