Switch back to USB 3.2 Gen 2 (USB7206)

[jacobgkau]

Wanted to record this on a tracker.

We changed from the USB7206 (3.2 Gen 2) to USB7006 (3.2 Gen 1) for Launch earlier this year because no 72x6 parts were in stock. Both DigiKey and Mouser now have thousands of USB7206 in stock at this point. The closest-matching part is USB7206CT/KDX, which @dlharmon confirmed should require no electrical changes (only possible firmware changes.)

• DigiKey (currently 2,959 in stock): https://www.digikey.com/en/products/detail/microchip-technology/USB7206CT-KDX/14325438
• Mouser (currently 7,356 in stock): https://www.mouser.com/ProductDetail/Microchip-Technology-Atmel/USB7206CT-KDX?qs=DRkmTr78QAQ6i3MTxEbtog%3D%3D

As the intention was to undo the downgrade once stock became available again, it would be good to switch back to Gen 2 with this available 7206 part (or at least get the change staged for when we run out of our current 7006 stock.)