ARM: dts: uniphier: update GPIO nodes

Switch to the single node design.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/dts/uniphier-pxs3.dtsi b/arch/arm/dts/uniphier-pxs3.dtsi
index 8944005..a004bd1 100644
--- a/arch/arm/dts/uniphier-pxs3.dtsi
+++ b/arch/arm/dts/uniphier-pxs3.dtsi
@@ -183,7 +183,7 @@
 		};
 
 		gpio: gpio@55000000 {
-			compatible = "socionext,uniphier-pxs3-gpio";
+			compatible = "socionext,uniphier-gpio";
 			reg = <0x55000000 0x200>;
 			interrupt-parent = <&aidet>;
 			interrupt-controller;
@@ -196,6 +196,7 @@
 			gpio-ranges-group-names = "gpio_range0",
 						  "gpio_range1",
 						  "gpio_range2";
+			ngpios = <286>;
 		};
 
 		i2c0: i2c@58780000 {