Commit 
d24d481b7d36 (usb-storage: Modify and export adjust_quirks so
that it can be used by uas) added the 'u' flag to the quirks module
parameter for usb-storage, but neglected to update the
documentation.  This patch adds the documentation.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>  # 3.15+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 
                                        bogus residue values);
                                s = SINGLE_LUN (the device has only one
                                        Logical Unit);
+                               u = IGNORE_UAS (don't bind to the uas driver);
                                w = NO_WP_DETECT (don't test whether the
                                        medium is write-protected).
                        Example: quirks=0419:aaf5:rl,0421:0433:rc