In order to make struct tpm_buf the first class object for constructing TPM
commands, migrate tpm2_get_tpm_pt() to use it.
Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: NNayna Jain <nayna@linux.vnet.ibm.com>
Tested-by: NNayna Jain <nayna@linux.vnet.ibm.com>
Reviewed-by: NJerry Snitselaar <jsnitsel@redhat.com>