arm64: zynqmp: Remove mt25qu512a compatible string from SOM

mt25qu512a is not documented in DT binding that's why remove it.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/517672560a472de33c8e5c4ffc729d8e288da43c.1703002605.git.michal.simek@amd.com
diff --git a/arch/arm/dts/zynqmp-sm-k26-revA.dts b/arch/arm/dts/zynqmp-sm-k26-revA.dts
index 1d62c48..5859e6c 100644
--- a/arch/arm/dts/zynqmp-sm-k26-revA.dts
+++ b/arch/arm/dts/zynqmp-sm-k26-revA.dts
@@ -144,7 +144,7 @@
 &qspi { /* MIO 0-5 - U143 */
 	status = "okay";
 	spi_flash: flash@0 { /* MT25QU512A */
-		compatible = "mt25qu512a", "jedec,spi-nor"; /* 64MB */
+		compatible = "jedec,spi-nor"; /* 64MB */
 		reg = <0>;
 		spi-tx-bus-width = <4>;
 		spi-rx-bus-width = <4>;