FC-USB revision 1.3

[Andrey.Mazlin]

In the revision 1.3 of FC-USB FACET Card added M.2 Key-E socket (normally used for WiFi)
Updated FACET Card documentation can be found in the link below:
https://fit-pc.com/wiki/index.php?title ... FACET_Card

There are 3 differences between the 2 revisions:

1. New USB HUB (with a new I2C address).
2. Added M.2 type E connector (for WiFi module).
3. Added 2 internal USB headers (to add USB connection in the FITLET2 enclosure).