Merge tag 'efi-2025-04-rc6' of https://source.denx.de/u-boot/custodians/u-boot-efi

Pull request efi-2025-04-rc6

CI:

* https://source.denx.de/u-boot/custodians/u-boot-efi/-/pipelines/25491

Documentation:

* correct references to overlay-fdt-boot.txt
* build: docker: Fix code highlighting syntax
* build: docker: Use code-block for syntax highlighting
* Fix typo bootfloe to bootflow

UEFI:

* Correct the size of the AcpiReclaimMemory region for ACPI tables
  when using QFW