msm: camera: Reset stats buffers during overflow recovery

During overflow recovery procedure, stats buffers are not
taken care. Reset stats buffers during overflow recovery and
re-configure stats registers to make sure stats buffers are
circulated properly after recovery.

Change-Id: I68acc7ab0de8b2c30c0d14ec340a9da32a2e4759
Signed-off-by: Sreesudhan Ramakrish Ramkumar <srramku@codeaurora.org>