boards: lpcxpresso55s28: Use usbphy1 for udc0

The PHY is necessary for a high speed USB connection.
Same code as on the closely related lpcxpresso55s69.

Signed-off-by: Fabian Otto <[email protected]>

Author: fbnors

boards/nxp/lpcxpresso55s28/lpcxpresso55s28.dts

@@ -126,6 +126,7 @@
 
 zephyr_udc0: &usbhs {
 	status = "okay";
+	phy-handle = <&usbphy1>;
 };
 
 zephyr_uhc0: &usbhfs {