camera: fix logging in ZslProcessor to avoid spam

AF state mismatch while selecting ZSL candidate should not be treated
as a warning. This results into undesriable spam in the logs.

ALso, using ALOGVV is consistent with how AE state mismatch is handled
in ZslProcessor3.cpp

Bug: 18634318
Change-Id: Ia9d7f2bb98f784990b1a6f923983c35f622c3791
1 file changed