Ispif crops sensor input for dual VFE to use. Sensor will still output only one big frame, and ispif needs to split a whole frame into two part for dual ISP to use. Change-Id: I42ae48bc3b070625e91f3cc5003339ba8035d6b9 Signed-off-by: Peter Liu <pingchie@codeaurora.org> Signed-off-by: Mingcheng Zhu <mingchen@codeaurora.org>