V4L/DVB (7402):  add macro validation for v4l_compat_ioctl32

Added macro CONFIG_COMPAT for v4l_compat_ioctl32.

Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/pwc/pwc-if.c b/drivers/media/video/pwc/pwc-if.c
index b6240a1..d2941c5 100644
--- a/drivers/media/video/pwc/pwc-if.c
+++ b/drivers/media/video/pwc/pwc-if.c
@@ -159,7 +159,9 @@
 	.poll =		pwc_video_poll,
 	.mmap =		pwc_video_mmap,
 	.ioctl =        pwc_video_ioctl,
+#ifdef CONFIG_COMPAT
 	.compat_ioctl = v4l_compat_ioctl32,
+#endif
 	.llseek =       no_llseek,
 };
 static struct video_device pwc_template = {