Merge tag 'u-boot-imx-next-20240624' of...

Merge tag 'u-boot-imx-next-20240624' 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/21310

- Enable SPL DTO application support for i.MX8MP DHCOM PDK2.
- Migrate imx8mn_bsh_smm_s2 and imx6ulz_bsh_smm_m2 to OF_UPSTREAM.
- Drop redundant imports with dts/upstream.
- Miscellaneous improvements for Gateworks i.MX8M boards.