ARM: dts: uniphier: add dr_mode property to dwc3 node

Since commit 576e3cc7 ("usb: host: xhci-dwc3: Add dual role mode
support from DT"), warning is displayed if dr_mode is not specified.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/dts/uniphier-ld20.dtsi

@@ -426,6 +426,7 @@
 				compatible = "snps,dwc3";
 				reg = <0x65a00000 0x10000>;
 				interrupts = <0 134 4>;
+				dr_mode = "host";
 				tx-fifo-resize;
 			};
 		};

arch/arm/dts/uniphier-pro4.dtsi

@@ -587,6 +587,7 @@
 				compatible = "snps,dwc3";
 				reg = <0x65a00000 0x10000>;
 				interrupts = <0 134 4>;
+				dr_mode = "host";
 				tx-fifo-resize;
 			};
 		};
@@ -604,6 +605,7 @@
 				compatible = "snps,dwc3";
 				reg = <0x65c00000 0x10000>;
 				interrupts = <0 137 4>;
+				dr_mode = "host";
 				tx-fifo-resize;
 			};
 		};

arch/arm/dts/uniphier-pro5.dtsi

@@ -598,6 +598,7 @@
 				compatible = "snps,dwc3";
 				reg = <0x65a00000 0x10000>;
 				interrupts = <0 134 4>;
+				dr_mode = "host";
 				tx-fifo-resize;
 			};
 		};
@@ -615,6 +616,7 @@
 				compatible = "snps,dwc3";
 				reg = <0x65c00000 0x10000>;
 				interrupts = <0 137 4>;
+				dr_mode = "host";
 				tx-fifo-resize;
 			};
 		};

arch/arm/dts/uniphier-pxs2.dtsi

@@ -610,6 +610,7 @@
 				compatible = "snps,dwc3";
 				reg = <0x65a00000 0x10000>;
 				interrupts = <0 134 4>;
+				dr_mode = "host";
 				tx-fifo-resize;
 			};
 		};
@@ -627,6 +628,7 @@
 				compatible = "snps,dwc3";
 				reg = <0x65c00000 0x10000>;
 				interrupts = <0 137 4>;
+				dr_mode = "host";
 				tx-fifo-resize;
 			};
 		};