watchdog: starfive: Fix the warning of starfive_wdt_match

Drop the function of of_match_ptr() to fix the warning of unused variable
'starfive_wdt_match'.

Fixes: db728ea9 ("drivers: watchdog: Add StarFive Watchdog driver")
Signed-off-by: Xingyu Wu <xingyu.wu@starfivetech.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20230427074400.55380-1-xingyu.wu@starfivetech.comSigned-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

drivers/watchdog/starfive-wdt.c

@@ -595,7 +595,7 @@ static struct platform_driver starfive_wdt_driver = {
 	.driver = {
 		.name = "starfive-wdt",
 		.pm = &starfive_wdt_pm_ops,
-		.of_match_table = of_match_ptr(starfive_wdt_match),
+		.of_match_table = starfive_wdt_match,
 	},
 };
 module_platform_driver(starfive_wdt_driver);