msm:camera:Fix for TCXO shutdown

Due to design change the number of clock references has increased.
Updated the clock structure size such that all associated clocks
are accounted while enabling and disabling them.

Change-Id: Id8ce5c04a6ff82fe055face55cf9a906b600359a
Signed-off-by: Aditya Jonnalagadda <ajonnala@codeaurora.org>