msm: camera: uapi: Add new Dual PD IFE output port

This change defines new output port to support Dual PD
HW output. This value is used to acquire, start, configure buffer
and stop the Dual PD output.

Change-Id: I46b48d2277d6dee78a7eb942d4ca8587627bb81c
Signed-off-by: Harsh Shah <harshs@codeaurora.org>