pxa-camera: build error 2.6.32-rc4

[Jonathan Cameron <jic23@cam.ac.uk>]

Error was 

drivers/media/video/pxa_camera.c: In function 'pxa_camera_wakeup':
drivers/media/video/pxa_camera.c:683: error: 'TASK_NORMAL' undeclared (first use in this function)
drivers/media/video/pxa_camera.c:683: error: (Each undeclared identifier is reported only once
drivers/media/video/pxa_camera.c:683: error: for each function it appears in.)
  CC [M]  drivers/pcmcia/soc_common.o

Line in question is

        wake_up(&vb->done);
in pxa_camera_wakeup.

Looks like issue is lack of inclusion of sched.h.

Right now I'm having trouble tracking down why this became and issue since 2.6.32-rc3.

Might be related to
Staging: comedi: Add include of <linux/sched.h> to fix build
which is down to removal of sched.h from poll.h
commmit a99bbaf5ee6bad1aca0c88ea65ec6e5373e86184
Looks like media/v4l2-dev.h and others include poll.h so I'm guessing
we were original getting it from there.

I'm happy to post a patch but was wondering if anyone else has seen this or has tracked down
exactly what changed, not to mention if this is a more general problem? (or for that matter
already fixed and I just missed it.)

Thanks

Jonathan