Merge tag 'efi-2023-01-rc1-3' of https://source.denx.de/u-boot/custodians/u-boot-efi

Pull request for efi-2023-01-rc1-3

UEFI:
* replace EFI_CALL() by internal functions
* delete loadfile2 handle by uninstalling all protocols

Other:

* Provide spi_set_speed() needed for implementation of
  EFI SPI I/O protocol