remoteproc updates for v6.6

Support for booting the iMX remoteprocs using MMIO, instead of SMCCC is
added. The iMX driver is also extended to support delivering interrupts
from an arbitrary number of vdev.

Support is added to the TI PRU driver, to allow GPMUX to be controlled
from DeviceTree.

The Qualcomm coredump collector is extended to fall back to generating a
full coredump, in the case that the loaded firmware doesn't support
generating minidump. The overly terse MD abbreviation of "MINIDUMP" is
expanded, to make the code easier on the eye.

The list of Qualcomm Sensor Low Power Island (SLPI) instances supported
is cleaned up, and SDM845 is added. SDM630/636/660 support for the modem
subsystem (mss) is added.

All the Qualcomm drivers are transitioned to of_reserved_mem_lookup()
instead of open coding the resolution of reserved-memory regions, to
gain handling of error cases. A couple of drivers are transitioned to
use devm_platform_ioremap_resource_byname().

The stm32 remoteproc driver's PM operations are updated to modern
macros, to avoid the "unused variable"-warning in some configurations.

Drivers are transitioned away from directly including of_device.h.
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