Merge tag 'doc-2024-04-rc2' of https://source.denx.de/u-boot/custodians/u-boot-efi

Pull request doc-2024-04-rc2

Documentation:

* Fix and extend utf8_to_utf32_stream() documentation
* Fix rendering of OpenSBI logo in VisionFive 2 description
* Document imxrt1170-evk board
* codingstyle.rst: Clarify include section

UEFI:

* simplify error message in efi_disk_create_raw()