ARM: DTS: Resync am3517-evm.dts with Linux 4.20

The DTS file for the AM3517 had the incorrect CD polarity.  Resync with
the fixed DTS file from Linux.

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/arch/arm/dts/am3517-som.dtsi b/arch/arm/dts/am3517-som.dtsi
index dae6e45..b1c988e 100644
--- a/arch/arm/dts/am3517-som.dtsi
+++ b/arch/arm/dts/am3517-som.dtsi
@@ -163,7 +163,7 @@
 		compatible = "ti,wl1271";
 		reg = <2>;
 		interrupt-parent = <&gpio6>;
-		interrupts = <10 IRQ_TYPE_LEVEL_HIGH>; /* gpio_170 */
+		interrupts = <10 IRQ_TYPE_EDGE_RISING>; /* gpio_170 */
 		ref-clock-frequency = <26000000>;
 		tcxo-clock-frequency = <26000000>;
 	};