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>

Author: andy-shev

drivers/platform/x86/wmi.c

@@ -1241,11 +1241,7 @@ static bool guid_already_parsed_for_legacy(struct acpi_device *device, const gui
 	list_for_each_entry(wblock, &wmi_block_list, list) {
 		/* skip warning and register if we know the driver will use struct wmi_driver */
 		for (int i = 0; allow_duplicates[i] != NULL; i++) {
-			guid_t tmp;
-
-			if (guid_parse(allow_duplicates[i], &tmp))
-				continue;
-			if (guid_equal(&tmp, guid))
+			if (guid_parse_and_compare(allow_duplicates[i], guid))
 				return false;
 		}
 		if (guid_equal(&wblock->gblock.guid, guid)) {