ramips: mt7621: pbr-m1: increase SPI clock to 50MHz

Signed-off-by: Chuanhong Guo <[email protected]>

target/linux/ramips/dts/mt7621_d-team_pbr-m1.dts

@@ -109,7 +109,8 @@
 	flash@0 {
 		compatible = "jedec,spi-nor";
 		reg = <0>;
-		spi-max-frequency = <10000000>;
+		spi-max-frequency = <50000000>;
+		m25p,fast-read;
 		broken-flash-reset;
 
 		partitions {