msm: camera: isp: clean up logic to handle bubble

Move request to active list whenever bubble is detected and wait for
buf done. Remove the request from active list after buf done from all
the ports are returned.

Change-Id: Ic9e3b0d28ab8beef7018b781fbcfcba83add8281
Signed-off-by: Junzhe Zou <jnzhezou@codeaurora.org>