ARM: driver updates

These are the usual updates for SoC specific device drivers and related
subsystems that don't have their own top-level maintainers:

- ARM SCMI/SCPI updates to allow pluggable transport layers

- TEE subsystem cleanups

- A new driver for the Amlogic secure power domain controller

- Various driver updates for the NXP Layerscape DPAA2, NXP i.MX SCU and
  TI OMAP2+ sysc drivers.

- Qualcomm SoC driver updates, including a new library module for
  "protection domain" notifications

- Lots of smaller bugfixes and cleanups in other drivers

Signed-off-by: Arnd Bergmann <arnd@arndb.de>