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nRF53 remoteproc_mgr_config overrides pin access

remoteproc_mgr_config() from nrf5340_cpunet_reset.c that is called during init by zephyr for starting main thread uses hardcoded pin numbers for uart with cts/rts pins and assigns these to network core during init. This is very odd since the comms between these are done in memory and it causes mayhem to the device init of the application core.
My network core devicetree is set up with no rts/cts pair and using different pins all together...

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