MFC r262393 (by ian):

Fix a typo _IMX51_TZICRREG_H_ -> _IMX51_TZICREG_H_ (extra R)
MFC r262408 (by ian):

Eliminate an unused-var warning by wrapping #if 0 around some tables of
values that were probably entered "for completeness" from a datasheet, and
for all I know may be useful/necessary some day.