msm: camera_v2: Handle vfe camif irq before axi irq

For each irq status, axi bits (image/stats) could be set as well
as camif sof bit. In this case, axi bits should be handled first
to better reflect the order of events: buf done of frame N before
SOF of frame N+1.

Bug: 11614033
Signed-off-by: Shuzhen Wang <shuzhenw@codeaurora.org>

Conflicts:
	drivers/media/platform/msm/camera_v2/isp/msm_isp_util.c