[][Refactor mt7986 dts/image to base on nand/nor model]

[Description]
Refactor mt7986 dts/image to base on nand/nor model

[Release-log]
N/A

Change-Id: I3b65a980d5513011fdd860223daff81745e9fa21
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/4641694
diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b-mt7976-ax6000-rfb4.dts b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b-mt7976-ax6000-rfb4.dts
index ea024ae..6a0fa7c 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b-mt7976-ax6000-rfb4.dts
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b-mt7976-ax6000-rfb4.dts
@@ -2,7 +2,7 @@
 #include "mt7986b-rfb.dtsi"
 / {
 	model = "MediaTek MT7986b RFB";
-	compatible = "mediatek,mt7986b-rfb";
+	compatible = "mediatek,mt7986b-snand-rfb";
 };
 
 &wbsys {