V4L/DVB (13286): pxa-camera: Fix missing sched.h

Required for wakeup call.
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/pxa_camera.c

@@ -26,6 +26,7 @@
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
+#include <linux/sched.h>
 
 #include <media/v4l2-common.h>
 #include <media/v4l2-dev.h>