gpio: ixp4xx: remove redundant of_match_ptr()

The driver depends on CONFIG_OF, so it is not necessary to use
of_match_ptr() here.

Even for drivers that do not depend on CONFIG_OF, it's almost always
better to leave out the of_match_ptr(), since the only thing it can
possibly do is to save a few bytes of .text if a driver can be used both
with and without it. Hence we remove of_match_ptr().

Signed-off-by: Zhu Wang <[e-mail]>
Reviewed-by: Andy Shevchenko <[e-mail]>
Signed-off-by: Bartosz Golaszewski <[e-mail]>

drivers/gpio/gpio-ixp4xx.c

···
 static struct platform_driver ixp4xx_gpio_driver = {
 	.driver = {
 		.name		= "ixp4xx-gpio",
-		.of_match_table = of_match_ptr(ixp4xx_gpio_of_match),
+		.of_match_table = ixp4xx_gpio_of_match,
 	},
 	.probe = ixp4xx_gpio_probe,
 };