msm: camera: isp: Enable SOF bits during ENABLE_CAMIF

During bus overflow recovery, sof bits are reset. If LED flash
snapshot is captured around same time, sof bits are not restored
during LED flash sequence. Set sof bits during ENABLE_CAMIF to
resolve the issue.

Change-Id: I9f47234fbff439f6832193b646c671d403f135e4
Signed-off-by: Sreesudhan Ramakrish Ramkumar <srramku@codeaurora.org>