Merge tag 'u-boot-imx-next-20241217' of https://gitlab.denx.de/u-boot/custodians/u-boot-imx into next

CI: https://source.denx.de/u-boot/custodians/u-boot-imx/-/pipelines/23877

- Add support for Apalis iMX8 1300MHz version.
- Don't advertise Gbit on (R)MII on the FEC controller.
- Fix srktool -c usage by removing spaces.