Merge tag 'efi-2022-07-rc2' of https://source.denx.de/u-boot/custodians/u-boot-efi

Pull request for efi-2022-07-rc2

UEFI:

* fix UEFI booting after integration of UEFI sub-system with driver model
* avoid random return values from devpath_is_partition()
* minor code clean ups