rp2: Don't advertise remote wakeup for USB serial.
rp2: Don't advertise remote wakeup for USB serial.

This USB feature is currently not supported.  With this flag enabled (and
the feature not implemented) the USB serial will stop working if there is a
delay of more than about 2 seconds between messages, which can occur with
USB autosuspend enabled.

Fixes issue #6866.

pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython,pfalcon/micropython