This commit marks the beginning of a new internal USB transfer statemachine. This work is about using a single state variable instead of multiple state bits as input for the USB statemachine to determine what to do in the various parts of the code. No APIs towards USB device drivers or USB host controller drivers will be changed.
This commit marks the beginning of a new internal USB
transfer statemachine. This work is about using a single
state variable instead of multiple state bits as input
for the USB statemachine to determine what to do in the
various parts of the code. No APIs towards USB device
drivers or USB host controller drivers will be changed.

MFC after:	1 month

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase