Merge tag 'efi-2021-07-rc3' of https://source.denx.de/u-boot/custodians/u-boot-efi
Pull request for efi-2021-07-rc3 Documentation: * add a man-page for the size command * add man-page for extension command to index Bug fixes: * avoid build failure due to missing SHA512 hardware acceleration * correct error handling in TCG2 protocol * don't let user disable capsule authentication * correct reading directories via UEFI API