sw64: add a misc device to chip_vt.dts for memory-hotplug

Sunway inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I56WV8

--------------------------------

This is an emulated device used to communicate with the memory-hotplug
device on the qemu side, so the device is added to device tree for
guest os.
Signed-off-by: NLu Feifei <lufeifei@wxiat.com>
Signed-off-by: NGu Zitao <guzitao@wxiat.com>

arch/sw_64/boot/dts/chip_vt.dts

@@ -34,5 +34,17 @@
 			clock-frequency = <24000000>;
 			status = "okay";
 		};
+		misc: misc0@8036 {
+			#address-cells = <2>;
+			#size-cells = <2>;
+			compatible = "sw6,sunway-ged";
+			reg = <0x8036 0x0 0x0 0x20>;
+			interrupt-parent=<&intc>;
+			interrupts = <13>;
+			reg-shift = <0>;
+			reg-io-width = <8>;
+			clock-frequency = <24000000>;
+			status = "okay";
+		};
 	};
 };