ARM: dts: uniphier: add SPI pin-mux node

		function = "sd1";

	};

	pinctrl_spi0: spi0 {

		groups = "spi0";

		function = "spi0";

	};

	pinctrl_spi1: spi1 {

		groups = "spi1";

		function = "spi1";

	};

	pinctrl_spi2: spi2 {

		groups = "spi2";

		function = "spi2";

	};

	pinctrl_spi3: spi3 {

		groups = "spi3";

		function = "spi3";

	};

	pinctrl_system_bus: system-bus {

		groups = "system_bus", "system_bus_cs1";

		function = "system_bus";