arm64: dts: mt7986: add pstore reserved memory

Author: frank-w

arch/arm64/boot/dts/mediatek/mt7986a.dtsi

@@ -68,6 +68,14 @@
 		#address-cells = <2>;
 		#size-cells = <2>;
 		ranges;
+
+		/* 64 KiB reserved for ramoops/pstore */
+		ramoops@42ff0000 {
+			compatible = "ramoops";
+			reg = <0 0x42ff0000 0 0x10000>;
+			record-size = <0x1000>;
+		};
+
 		/* 192 KiB reserved for ARM Trusted Firmware (BL31) */
 		secmon_reserved: secmon@43000000 {
 			reg = <0 0x43000000 0 0x30000>;