x86: minnowmax: Drop io-base property in the pch_pinctrl node

IOBASE is now obtained from PCH driver, drop this <io-base> property.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>

arch/x86/dts/minnowmax.dts

@@ -29,7 +29,6 @@
 
 	pch_pinctrl {
 		compatible = "intel,x86-pinctrl";
-		io-base = <0x4c>;
 
 		/* GPIO E0 */
 		soc_gpio_s5_0@0 {