Build

Adding support for `nRF5340-DK` board #237

Job	Run time
build-and-run-zephyr-sample (hello-world, powered by Ocre, generic/hello-world)	4m 53s
build-and-run-linux-sample (blinky, blink (count: 1, state: -), generic/blinky)	1m 17s
build-and-run-linux-sample (hello-world, powered by Ocre, generic/hello-world)	1m 10s
build-and-run-zephyr-sample (filesystem-full, Directory listing for, generic/filesystem-full)	3m 24s
build-zephyr-base (native_sim)	2m 9s
build-zephyr-base (b_u585i_iot02a)	2m 49s
build-and-run-linux-sample (filesystem-full, Directory listing for, generic/filesystem-full)	1m 12s
build-linux-base	21s
run-linux-base	23s
run-zephyr-base-native-sim	27s
flash-zephyr-base-b_u585i_iot02a	10s
flash-validation-tests	21s
	18m 36s

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