clk: tm2: add dsu clock [2/3]

clk: tm2: add dsu clock [2/3]

PD#SWPL-6758

Problem:
tm2 dsu clock does not work

Solution:
1.add dsu clock
2.gp1 pll clock

Verify:
verify on tm2 ad311

Change-Id: I8090a75d15ae4e532f6ae04563d6d0158f8fbc87
Signed-off-by: Jian Hu <jian.hu@amlogic.com>