giga: enable wifi using firmware from loader #659

Job	Run time
Build and package cores	9m 41s
Split off zephyr_contrib	7s
Split off zephyr	10s
Split off zephyr_main	17s
Split off zephyr_unoq	14s
Test zephyr_main:niclasense	2m 39s
Test zephyr:unoq	2m 24s
Test zephyr_main:nano33ble	2m 33s
Test zephyr_main:portentac33	2m 31s
Test zephyr_main:giga	2m 29s
Test zephyr_contrib:frdm_mcxn947	2m 25s
Test zephyr_contrib:ek_ra8d1	2m 25s
Test zephyr_contrib:frdm_rw612	2m 28s
Test zephyr_main:portentah7	2m 32s
Test zephyr_main:opta	2m 28s
Publish jsons	22s
Collect logs	8s
verify-core	0s
Publish core	0s
cleanup-artifacts	3s
	35m 56s

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