Integrate meta-seco-imx/ap/c72_wifi

Commit: edgehog/layers/seco/meta-seco-imx@d13b703b

[C72] fix kernel recipe using new common override

Introduce a new MACHINEOVERRIDES value in the common machine file seco-c72.inc used to reference all three C72 boards (imx8mn-c72, imx8mnl-c72 and the upcoming imx8mm-c72).

Disable the old wi-fi driver and use the new driver for all c72 boards.

Also, update SRC_URI using :append instead of +=, which is evaluated immediately (before the override is resolved) and causes a build error.

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Commit: edgehog/layers/seco/meta-seco-imx@1c2cbdfc

[C72] use new version of wi-fi driver

The current version used in C72 of the driver for sd8997 sometimes causes the wifi to crash with this error: wlan_wakeup_card_timeout_func: ps_state=3.

Use the version of the driver in branch lf-6.1.55_2.2.0, which is also used for other boards such as E14 and C31