tpm: Add firmware API call 2HASH-EXT-LOG

Add a new firmware API call with the name 2HASH-EXT-LOG that will be used
by trusted grub for measuring, logging, and extending TPM PCRs.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
5 files changed