msm: camera: isp: Fix clock rates in msm8996 for ispif

Clock rates for ispif is now read from dtsi file.
Correct the settings so appropriate clock rates for
ispif will be loaded.

Change-Id: Ia9681a7fd3cd272288ae9a6f699082f23b5ad4a1
Signed-off-by: Sreesudhan Ramakrish Ramkumar <srramku@codeaurora.org>