Merge tag 'efi-2023-04-rc1' of https://source.denx.de/u-boot/custodians/u-boot-efi

Pull request for efi-2023-04-rc1

Documentation:

* build infodocs target on Gitlab CI, Azure

UEFI:

* fix function descriptions
* add .rela sections to .text on arm64
* use EFI_EXIT in efi_riscv_get_boot_hartid
* improve specification conformance of set_keyboard_layout()