arm: dts: k3-j721e: Increase OSPI default frequency to 50MHz

In 1 bit mode OSPI can work at upto 50MHz, this provides better write
performance. Therefore increase frequency from 40MHz to 50MHz

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
diff --git a/arch/arm/dts/k3-j721e-r5-common-proc-board.dts b/arch/arm/dts/k3-j721e-r5-common-proc-board.dts
index 403b158..2dde65d 100644
--- a/arch/arm/dts/k3-j721e-r5-common-proc-board.dts
+++ b/arch/arm/dts/k3-j721e-r5-common-proc-board.dts
@@ -309,7 +309,7 @@
 		reg = <0x0>;
 		spi-tx-bus-width = <1>;
 		spi-rx-bus-width = <8>;
-		spi-max-frequency = <40000000>;
+		spi-max-frequency = <50000000>;
 		cdns,tshsl-ns = <60>;
 		cdns,tsd2d-ns = <60>;
 		cdns,tchsh-ns = <60>;