Replace the self-rolled implementations with kstrtobool(). This reduces
the maintenance efforts in the future.
Signed-off-by: Guan-Yu Lin <guanyulin@google.com>
Link: https://lore.kernel.org/r/20240202030301.2396374-1-guanyulin@google.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>