 bit of the QSPI controller.
                     This is required for QSPI to be used in Non QSPI boot
                     mode else there needs to be an external pullup on this
                     line. See <a href="http://www.xilinx.com/support/answers/47596.htm">http://www.xilinx.com/support/answers/47596.htm</a>
 2.01a sg  02/03/13 Created a function FlashReadID.
       ms  04/05/17 Modified Comment lines in functions to
                    recognize it as documentation block for doxygen
            