ramips: mt7621: specify "firmware" partition format for remaining devices

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

target/linux/ramips/dts/RBM11G.dts

@@ -136,6 +136,7 @@
 			};
 
 			partition@40000 {
+				compatible = "mikrotik,minor";
 				label = "firmware";
 				reg = <0x040000 0xFC0000>;
 			};

target/linux/ramips/dts/RBM33G.dts

@@ -161,6 +161,7 @@
 			// Region <0x0 0x40000> seems reserved by OEM
 
 			partition@40000 {
+				compatible = "mikrotik,minor";
 				label = "firmware";
 				reg = <0x040000 0xFC0000>;
 			};

target/linux/ramips/dts/WF-2881.dts

@@ -86,6 +86,7 @@
 		};
 
 		partition@140000 {
+			compatible = "denx,uimage";
 			label = "firmware";
 			reg = <0x140000 0x7E40000>;
 		};

target/linux/ramips/dts/WSR-1166.dts

@@ -152,6 +152,7 @@
 			};
 
 			partition@50000 {
+				compatible = "openwrt,trx";
 				label = "firmware";
 				reg = <0x50000 0xf90000>;
 			};