SPI: fix data mode settings #741

Job	Run time
Build and package cores	9m 9s
Split off zephyr	16s
Split off zephyr_contrib	12s
Split off zephyr_main	9s
Split off zephyr_unoq	15s
Test zephyr_main:portentac33	2m 36s
Test zephyr_main:nano33ble	2m 35s
Test zephyr_contrib:ek_ra8d1	2m 28s
Test zephyr_contrib:frdm_mcxn947	2m 17s
Test zephyr_contrib:frdm_rw612	1m 50s
Test zephyr_main:portentah7	2m 29s
Test zephyr_main:niclasense	1m 54s
Test zephyr_main:giga	2m 33s
Test zephyr_main:opta	2m 25s
Test zephyr:unoq	2m 15s
Collect logs	10s
Publish jsons	20s
Publish core	0s
verify-core	0s
cleanup-artifacts	3s
	33m 56s

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