HEADSUP: USB da(4) quirks deprecated

[Nate Lawson]

I have committed code to disable the USB quirks in da(4). Since we now
have code that should handle the common case of a failure after receiving
6 byte commands, most of them should no longer be necessary.  However, the
only way to tell if a quirk is really needed is to test the new code with
the quirks disabled.  You may have a device (USB camera, pen drive, hard
drive, ...) that begins to get errors like "BBB bulk-in clear stall
failed" or "Synchronize cache failed, status 0x35". If you get these, you
can enable previous behavior by adding:

    options DA_OLD_QUIRKS

to your kernel config and recompiling.  Once you do this, please send me
the output of "camcontrol inquiry da0" so I can re-enable your quirk for
good.  I'm doing this as soon as possible so the unnecessary quirks can be
removed for 4.9.  Once they are removed, DA_OLD_QUIRKS will go away so
please test as soon as you can.  So far, there have been no problem
reports with this in 5-current.

Thanks for your patience,
Nate