ARM: dts: at91: sama5d27_wlsom1_ek: add USB device node

Add USB device node for WLSoM1 EK and enable it.

Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>
[eugen.hristev@microchip.com: ported to 5.4]
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Link: https://lore.kernel.org/r/20200318104236.21114-1-eugen.hristev@microchip.com


Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>