watchdog: stm32: Drop unnecessary of_match_ptr()

With COMPILE_TEST recently enabled, 0-day reports a warning:

drivers/watchdog/stm32_iwdg.c:215:34: warning: 'stm32_iwdg_of_match' defined but not used [-Wunused-const-variable=]

As STM32 platforms are always used with DT, drop the of_match_ptr().

Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Signed-off-by: Rob Herring <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
Signed-off-by: Wim Van Sebroeck <[email protected]>

Author: robherring

drivers/watchdog/stm32_iwdg.c

@@ -287,7 +287,7 @@ static struct platform_driver stm32_iwdg_driver = {
 	.probe		= stm32_iwdg_probe,
 	.driver = {
 		.name	= "iwdg",
-		.of_match_table = of_match_ptr(stm32_iwdg_of_match),
+		.of_match_table = stm32_iwdg_of_match,
 	},
 };
 module_platform_driver(stm32_iwdg_driver);