[][kernel][mt7988][Change config-5.4 and dtsi files to support pstore]

[Description]
Change config-5.4 and dtsi files to support pstore.

[Release-log]
N/A

Change-Id: I0fdb8b3705c31a59018718f03e8d81fe7418a2c2
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7192565
diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7988.dtsi b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7988.dtsi
index 46f0708..94fcba2 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7988.dtsi
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7988.dtsi
@@ -286,6 +286,14 @@
 		#size-cells = <2>;
 		ranges;
 
+		ramoops: ramoops@42ff0000{
+			compatible = "ramoops";
+			reg = <0x0 0x42ff0000 0x0 0x10000>;
+			record-size = <0x2000>;
+			console-size = <0x2000>;
+			pmsg-size = <0x2000>;
+		};
+
 		/* 192 KiB reserved for ARM Trusted Firmware (BL31) */
 		secmon_reserved: secmon@43000000 {
 			reg = <0 0x43000000 0 0x30000>;