[USBEHCI]

[USBEHCI]
- Abort pipe when performing sync reset request
- add assert to check for bogus interface descriptors
- use endpoint max packet size when available
- flip data toggle after each transfer
- remove dead code
- use maximum of 4 pages or rest current buffer size when performing a bulk requests
- use nak reload count 3
- perform 1 transaction per frame

svn path=/trunk/; revision=55634