expose other three fclks

Change-Id: I57c0fa446438e24958ffc2f63f80eaa1739b752b
export HDMI pins

Change-Id: I392a70218e39e2ada1032b47c4d13697e7bd7fb0
remove all the unused clock and reset ports on Zynq platforms

Change-Id: Ib446c0bf9d676289ba302b19105ba7bfd52183c7
add a few more ports to disconnect

Change-Id: I073f253237678291b53d023188ffa347f8f9061e