K 10
svn:author
V 4
avos
K 8
svn:date
V 27
2016-09-06T06:40:59.660465Z
K 7
svn:log
V 260
rum: fix frame length checks in Rx path.

Split usbd_xfer_status() check:
- Check xfer length: must be longer, than Rx descriptor size.
- Check frame size: must be shorter than xfer length.
- Discard too short frames.

Tested with WUSB54GC, STA/MONITOR modes.

END