MFC r261449:
Fix lock acquisition in case no request space available, missed in r260097.
MFC r260949:
Make comconsole options set before its activation to be remembered.
MFC: 261291

The timestamp bit is number 17, and not number 9, in the stat error
field of the receive descriptor.
MFC r261505:
Fix a regression issue. Contiguous single segment allocations above
PAGE_SIZE bytes should only use one USB page structure. Fixes a
problem with some external drivers.