ARM: dts: uniphier: sync Device Trees with upstream Linux

I periodically sync Device Trees for better maintainability.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/dts/uniphier-ph1-ld4.dtsi b/arch/arm/dts/uniphier-ph1-ld4.dtsi
index 5ae029e..5629b7d 100644
--- a/arch/arm/dts/uniphier-ph1-ld4.dtsi
+++ b/arch/arm/dts/uniphier-ph1-ld4.dtsi
@@ -310,7 +310,7 @@
 };
 
 &pinctrl {
-	compatible = "socionext,ph1-ld4-pinctrl", "syscon";
+	compatible = "socionext,uniphier-ld4-pinctrl";
 };
 
 &sysctrl {