msm: camera: Add support for more than one buffer per HW stream

Add support to use more than one buffer queue per HW stream. This
functionality could be use only for controllable outputs. Using
frame request iocltl user specified from which queue buffer will
be got.

Change-Id: Ic1b9c2379bd9c96584c9ad27b41f77042f6bceb9
Signed-off-by: Konstantin Motov <kmotov@codeaurora.org>