Add ethosu_config_select platform hook
Allow config and hence port selection to be done at run-time based on region address, avoiding need to recompile C code for linker map changes, and permitting an application to have one model in SRAM and another in external memory.
Moved from https://review.mlplatform.org/c/ml/ethos-u/ethos-u-core-driver/+/13384
Edited by Kevin Bracey