Integrate meta-seco-imx/linux-seco-imx/seco_lf-5.10.y_watchdog_a62

Commit: https://git.seco.com/edgehog/layers/seco/meta-seco-imx/-/commit/2fac1bdb48a59296dc6a30134ee140ef2887950f

Integrate linux-seco-imx/seco_lf-5.10.y_watchdog_a62

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Commit: https://git.seco.com/edgehog/bsp/nxp/linux-seco-imx/-/commit/7fbc1eca901b59c76a75a7f0e5bc714482a4b5be

[A62] add SECO GPIO watchdog support

With this commit we disable the integrated MX6 SoC WDT and enable the board external APX823 WDT. This WDT provides full reset to the board by driving the SoC POR_B signal.

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Commit: https://git.seco.com/edgehog/bsp/nxp/linux-seco-imx/-/commit/c1a330c4354b13e3ad12120f91f5cef9cad6d8c0

[i.MX6] add SECO GPIO watchdog driver config

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Commit: https://git.seco.com/edgehog/bsp/nxp/linux-seco-imx/-/commit/3ab6e6e5daa1955d3acc6aee41aab5712744c7e1

[DRIVER][WDT] add SECO GPIO watchdog driver

This is a generic driver for GPIO-based WDTs that use two GPIOs: enable and trigger. It is based on the linux GPIO-controlled watchdog driver.

There exists another SECO driver that can be used for similar hardware, having the compatible name "seco,apx-wdog": that one initializes the watchdog earlier in the boot process, and so is used if that more complex use case is necessary.