Merge tag 'efi-2025-04-rc3' of https://source.denx.de/u-boot/custodians/u-boot-efi

CI:

* https://source.denx.de/u-boot/custodians/u-boot-efi/-/pipelines/24709

UEFI:

* create a parent device for all EFI block devices
* move lmb_map_update_notify() to EFI
* make efi_add_memory_map_pg() static
* remove comparisons to string literals from runtime
* ix potential deref-after-null

Other:

* avoid superfluous value check in lmb_map_update_notify()
* support more efi protocols in uuid_guid_get_str()