ath79: fix incorrect identation in qca9557.dtsi

Signed-off-by: David Bauer <[email protected]>

target/linux/ath79/dts/qca9557.dtsi

@@ -289,7 +289,7 @@
 			phys = <&usb_phy1>;
 
 			status = "disabled";
-	};
+		};
 
 		spi: spi@1f000000 {
 			compatible = "qca,ar9557-spi", "qca,ar7100-spi";