[][MAC80211][infra][Update dts for mt76 to support flash mode]

[Description]
Add slot0 in dts for mt76 to support flash mode

[Release-log]
N/A

Change-Id: I3ee413070f2a93090355dcdae1f7e742cbab321f
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/7077950
diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7988a-gsw-10g-spim-nand.dts b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7988a-gsw-10g-spim-nand.dts
index 58d0733..6045169 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7988a-gsw-10g-spim-nand.dts
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7988a-gsw-10g-spim-nand.dts
@@ -449,3 +449,11 @@
 	no-sdio;
 	status = "okay";
 };
+
+&slot0 {
+	mt7996@0,0 {
+		reg = <0x0000 0 0 0 0>;
+		device_type = "pci";
+		mediatek,mtd-eeprom = <&factory 0x0>;
+	};
+};