ARM: dts: lpc4357-ea4357: add ssp0

The SSP0 can be found on the EA4357 Dev Kit on J15 pin 3-6.
Signed-off-by: Joachim Eastwood <manabian@gmail.com>

arch/arm/boot/dts/lpc4357-ea4357-devkit.dts

@@ -389,6 +389,23 @@ spifi_cs_cfg {
 		};
 	};
 
+	ssp0_pins: ssp0-pins {
+		ssp0_sck_miso_mosi {
+			pins = "pf_0", "pf_2", "pf_3";
+			function = "ssp0";
+			slew-rate = <1>;
+			bias-pull-down;
+			input-enable;
+			input-schmitt-disable;
+		};
+
+		ssp0_ssel {
+			pins = "pf_1";
+			function = "ssp0";
+			bias-pull-up;
+		};
+	};
+
 	uart0_pins: uart0-pins {
 		uart0_rx_cfg {
 			pins = "pf_11";
@@ -535,6 +552,13 @@ partition@0 {
 	};
 };
 
+&ssp0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&ssp0_pins>;
+	num-cs = <1>;
+};
+
 &uart0 {
 	status = "okay";
 	pinctrl-names = "default";