Add rules for finding places where str_up_down() can be used.
This currently finds over 20 locations.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://lore.kernel.org/r/20240725101841.574-2-michal.wajdeczko@intel.comSigned-off-by: Kees Cook <kees@kernel.org>