msm: camera: isp: allow state transition for controllable output

Controllable output streams can provide continuous output although are
represented as burst stream in kernel. So they need to support runtime
stream state transitions like continuous streams.

Change-Id: Iab77d448d2038191ee53c638a38914423fda3d9e
Signed-off-by: Petar Sivenov <psiven@codeaurora.org>