When locking down TXT is skipped, e.g. to do error injection, locking down DMI3 and IIO DFX related TXT registers should also be skipped. Change-Id: Ieef25c02ec103eaef65d8b44467ccb9e6917bb6c Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/50238 Reviewed-by: Jonathan Zhang <jonzhang@fb.com> Reviewed-by: Rocky Phagura Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>