ARM: dts: uniphier: remove a whitespace after tabs

A trivial codying style fix.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

arch/arm/boot/dts/uniphier-common32.dtsi

@@ -141,7 +141,7 @@ soc-glue@5f800000 {
 			reg = <0x5f800000 0x2000>;
 
 			pinctrl: pinctrl {
-				 /* specify compatible in each SoC DTSI */
+				/* specify compatible in each SoC DTSI */
 			};
 		};
 	};