rp2/CMakeLists.txt: Enable USB enumeration fix.
rp2/CMakeLists.txt: Enable USB enumeration fix.

This is a workaround for errata RP2040-E5, and is needed to make USB more
reliable on certain USB ports.

Signed-off-by: Damien George <99e6b749acbfbe2a596df99e91d24d6e1fdbee00@micropython.org>

bvernoux/micropython,henriknelson/micropython,bvernoux/micropython,bvernoux/micropython,henriknelson/micropython,adafruit/circuitpython,adafruit/circuitpython,henriknelson/micropython,henriknelson/micropython,adafruit/circuitpython,bvernoux/micropython,adafruit/circuitpython,adafruit/circuitpython,henriknelson/micropython,adafruit/circuitpython,bvernoux/micropython