MIPS: mscc: serval: rename pinctrl nodes

The pinctrl device tree binding will be converted to YAML format. Rename
the pin nodes so they end with "-pins" to match the schema.
Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

arch/mips/boot/dts/mscc/serval_common.dtsi

@@ -82,38 +82,38 @@ i2c_pins: i2c-pins {
 		pins = "GPIO_7"; /* No "default" scl for i2c0 */
 		function = "twi";
 	};
-	i2cmux_pins_i: i2cmux-pins-i {
+	i2cmux_pins_i: i2cmux-pins {
 		pins = "GPIO_11", "GPIO_12", "GPIO_18", "GPIO_19",
 			"GPIO_20", "GPIO_21";
 		function = "twi_scl_m";
 		output-low;
 	};
-	i2cmux_0: i2cmux-0 {
+	i2cmux_0: i2cmux-0-pins {
 		pins = "GPIO_11";
 		function = "twi_scl_m";
 		output-high;
 	};
-	i2cmux_1: i2cmux-1 {
+	i2cmux_1: i2cmux-1-pins {
 		pins = "GPIO_12";
 		function = "twi_scl_m";
 		output-high;
 	};
-	i2cmux_2: i2cmux-2 {
+	i2cmux_2: i2cmux-2-pins {
 		pins = "GPIO_18";
 		function = "twi_scl_m";
 		output-high;
 	};
-	i2cmux_3: i2cmux-3 {
+	i2cmux_3: i2cmux-3-pins {
 		pins = "GPIO_19";
 		function = "twi_scl_m";
 		output-high;
 	};
-	i2cmux_4: i2cmux-4 {
+	i2cmux_4: i2cmux-4-pins {
 		pins = "GPIO_20";
 		function = "twi_scl_m";
 		output-high;
 	};
-	i2cmux_5: i2cmux-5 {
+	i2cmux_5: i2cmux-5-pins {
 		pins = "GPIO_21";
 		function = "twi_scl_m";
 		output-high;