pinctrl: ingenic: Probe driver at subsys_initcall

Using postcore_initcall() makes the driver try to initialize way too
early.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/pinctrl-ingenic.c b/drivers/pinctrl/pinctrl-ingenic.c
index 6a1b605..4bceae8 100644
--- a/drivers/pinctrl/pinctrl-ingenic.c
+++ b/drivers/pinctrl/pinctrl-ingenic.c
@@ -847,4 +847,4 @@ static int __init ingenic_pinctrl_drv_register(void)
 {
 	return platform_driver_register(&ingenic_pinctrl_driver);
 }
-postcore_initcall(ingenic_pinctrl_drv_register);
+subsys_initcall(ingenic_pinctrl_drv_register);