amr64: dts: librem5: disable auto DPDM

The bq25892 shares the USB 2 DP/DM with the dwc3 disable the auto negotiation
so there is no contention.
Signed-off-by: Angus Ainslie <angus@akkea.ca>

arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi

@@ -1420,6 +1420,7 @@
 		ti,boost-max-current = <500000>; /* uA */
 		ti,use-vinmin-threshold = <1>; /* enable VINDPM */
 		ti,vinmin-threshold = <3900000>; /* uV */
+		ti,auto_dpdm_disable;
 		monitored-battery = <&bat>;
 	};
 };