msm: fd: Flip the order of calling vb2_buffer_done and v4l2_event_queue_fh

In the FD IRQ handler the order of calling vb2_buffer_done and
v4l2_event_queue_fh is incorrect, this is causing FD to fail.
Flip the order of calling vb2_buffer_done and v4l2_event_queue_fh
to fix this issue.

Change-Id: Ibed4ff7deda5e716fb725019c199e34ba5f0bae2
Signed-off-by: Sunid Wilson <sunidw@codeaurora.org>