mediatek: filogic: convert MT7981 RFB to fitblk

Use fitblk driver instead of deprecated uImage.FIT partition parser.

Signed-off-by: Daniel Golle <[email protected]>

target/linux/mediatek/files-6.6/arch/arm64/boot/dts/mediatek/mt7981-rfb-spim-nand.dtso

@@ -6,6 +6,11 @@
 	compatible = "mediatek,mt7981-rfb", "mediatek,mt7981";
 
 	fragment@0 {
+		target = <&chosen>;
+		rootdisk-spim-nand = <&ubi_rootdisk>;
+	};
+
+	fragment@1 {
 		target = <&spi0>;
 		__overlay__ {
 			status = "okay";
@@ -50,13 +55,20 @@
 					partition@580000 {
 						label = "ubi";
 						reg = <0x580000 0x4000000>;
+						compatible = "linux,ubi";
+
+						volumes {
+							ubi_rootdisk: ubi-volume-fit {
+								volname = "fit";
+							};
+						};
 					};
 				};
 			};
 		};
 	};
 
-	fragment@1 {
+	fragment@2 {
 		target = <&wifi>;
 		__overlay__ {
 			mediatek,mtd-eeprom = <&factory 0x0>;

target/linux/mediatek/files-6.6/arch/arm64/boot/dts/mediatek/mt7981-rfb.dts

@@ -15,8 +15,9 @@
 		serial0 = &uart0;
 	};
 
-	chosen {
+	chosen: chosen {
 		stdout-path = "serial0:115200n8";
+		bootargs-append = " root=/dev/fit0 rootwait";
 	};
 
 	memory {

target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh

@@ -71,6 +71,7 @@ platform_do_upgrade() {
 	bananapi,bpi-r4-poe|\
 	cmcc,rax3000m|\
 	jdcloud,re-cp-03|\
+	mediatek,mt7981-rfb|\
 	mediatek,mt7988a-rfb|\
 	nokia,ea0326gmp|\
 	openwrt,one|\
@@ -114,7 +115,6 @@ platform_do_upgrade() {
 		;;
 	h3c,magic-nx30-pro|\
 	jcg,q30-pro|\
-	mediatek,mt7981-rfb|\
 	netcore,n60|\
 	qihoo,360t7|\
 	xiaomi,mi-router-ax3000t-ubootmod|\