The legacy ft2232 driver suggests that the adapter has tristate
buffers on both nSRST and nTRST, even though they were not used as
such.
Change-Id: I971692ea6b3439ac93311b89877825a5cc21df46
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/3663
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>