ARM: dts: Fix wl12xx missing clocks that cause hangs

The tcxo-clock-frequency binding is listed as optional,
but without it the wl12xx used on the torpedo + wireless
may hang.  Scanning also appears broken without this patch.
Signed-off-by: Adam Ford <aford173@gmail.com>
Fixes: 687c2767 ("ARM: dts: Add minimal support for LogicPD
Torpedo DM3730 devkit")
Cc: stable@vger.kernel.org # v4.2+
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/logicpd-torpedo-som.dtsi

@@ -143,6 +143,7 @@ wlcore: wlcore@2 {
 		interrupt-parent = <&gpio5>;
 		interrupts = <24 IRQ_TYPE_LEVEL_HIGH>; /* gpio 152 */
 		ref-clock-frequency = <26000000>;
+		tcxo-clock-frequency = <26000000>;
 	};
 };