platform/x86: wmi: Replace open coded guid_parse_and_compare()

Even though we have no issues in the code, let's replace the open
coded guid_parse_and_compare().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230621151155.78279-2-andriy.shevchenko@linux.intel.com


Tested-by: Armin Wolf <W_Armin@gmx.de>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>