tpm2_eventlog: use same output format for EV_EFI_ACTION and EV_POST_CODE
tpm2_eventlog: use same output format for EV_EFI_ACTION and EV_POST_CODE

This also avoids a potential stack smash if the event log
violates the spec and has an action string longer than
permitted.

Signed-off-by: Trammell hudson <dfb64870173313a9a7b56f814c8e3b33e268497a@trmm.net>

01org/tpm2.0-tools,01org/tpm2.0-tools,01org/tpm2.0-tools