Merge tag 'efi-2021-01-rc2-2' of https://gitlab.denx.de/u-boot/custodians/u-boot-efi

Pull request for UEFI sub-system for efi-2021-01-rc2 (2)

The following bugs are fixed:

* The conitrace command failed to build.
* Non-volatile UEFI variables were not delete form the file store.

The following features are added:

* Support for the FN1 - FN10 keys on crosswire keyboards is added.
* An EFI binary is provided to dump the binary device tree.

tpm2_get_capability() is adjusted in preparation of the implementation
of the EFI_TCG2_PROTOCOL.