Merge tag 'u-boot-imx-master-20250411' of https://gitlab.denx.de/u-boot/custodians/u-boot-imx

CI: https://source.denx.de/u-boot/custodians/u-boot-imx/-/pipelines/25652

- Add i.MX8MP LDB support.
- Various phycore-imx93 environment improvements.
- Add support for Toradex SMARC iMX8MP.