ARM: dts: fp5280g2: Enable KCS 3 for MCTP binding

Signed-off-by: George Liu <liuxiwei@inspur.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20210819055227.140980-1-liuxiwei@inspur.comSigned-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-bmc-inspur-fp5280g2.dts

@@ -3,6 +3,7 @@
 #include "aspeed-g5.dtsi"
 #include <dt-bindings/gpio/aspeed-gpio.h>
 #include <dt-bindings/leds/leds-pca955x.h>
+#include <dt-bindings/interrupt-controller/irq.h>
 
 / {
 	model = "FP5280G2 BMC";
@@ -902,4 +903,10 @@ fan@7 {
 
 };
 
+&kcs3 {
+	status = "okay";
+	aspeed,lpc-io-reg = <0xca2>;
+	aspeed,lpc-interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
+};
+
 #include "ibm-power9-dual.dtsi"