Integrate linux-seco-imx/seco_lf-5.10.y-dev

Commit: https://git.seco.com/edgehog/bsp/nxp/linux-seco-imx/-/commit/7409c5380586ca6573a7a53ce7faaa13386b0afa

[i.MX8MP] support pwm polarity inversion

The i.MX8M Plus has the same PWM IP as i.MX6 / i.MX7. This IP and the driver supporting pwm polarity inversion. Switch CPU device tree fragment to use 3 pwm-cells.

REFERENCE: commit: https://github.com/nxp-imx/linux-imx/commit/d80b9c8422fa8e02b9a92b90fbb328e3e069c649