msm: camera: Add open count check for isp buffer manager

When the second ISP open, the buffer manager should not
be initialized again. This change allow buffer manager
to be shared by two ISP.

Change-Id: I401196296dcc8b4d1eb3056c07f9b5f79c9529d0
Signed-off-by: Kevin Chan <ktchan@codeaurora.org>
2 files changed