lib/string_choices: Rearrange functions in sorted order

Rearrange misplaced functions in sorted order.

Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: R Sundar <prosunofficial@gmail.com>
Reviewed-by: Larysa Zaremba <larysa.zaremba@intel.com>
Link: https://lore.kernel.org/r/20241119021719.7659-2-prosunofficial@gmail.com


Signed-off-by: Kees Cook <kees@kernel.org>