ARM: dts: msm: change early camera on msm8996 agave

make this change to avoid the clk warning logs
1. remove the repeated clks
2. change the sequence of clks , make the parent clks before children clks
3. add clock-control for early-camera

Change-Id: I1746cbdce3a7335187433ae993637d2db9cdf58e
Signed-off-by: Chunhuan Zhan <zhanc@codeaurora.org>