Merge tag 'tpm-master-24062024' of https://source.denx.de/u-boot/custodians/u-boot-tpm

When the EFI TCG measurement code moved from EFI to the TPM subsystem for
general use some prototypes changed from returning efi_status_t to int,
which is more appropriate for the non-EFI APIs. However, some of the
EFI callsites never changed and we ended up assigning the int value to
efi_status_t.

This is unlikely to cause any problems, apart from returning invalid
values on failures and violating the EFI spec.