ARM: dts: msm: camera: Add generic camera node per HW socket

We create separate node per camera hardware socket.All cameras
connected to same HW slot using the same node. We can use this
node structure in multimodule camera architecture.

Change-Id: I5dcc62b624f41282f1609afb843320453e7e41b4
Signed-off-by: Sreesudhan Ramakrish Ramkumar <srramku@codeaurora.org>
Signed-off-by: Evgeniy Borisov <eborisov@codeaurora.org>