panic: use str_enabled_disabled() helper

Use str_enabled_disabled() helper instead of open coding the same.

Link: https://lkml.kernel.org/r/20221008195914.54199-1-andriy.shevchenko@linux.intel.com


Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>