[media] omap3isp: fix compilation of ispvideo.c

Fix following build error by explicitely including <linux/module.h>
header file.

  CC      drivers/media/video/omap3isp/ispvideo.o

Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>