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>

drivers/media/radio/radio-rtrack2.c

@@ -288,7 +288,9 @@ static const struct file_operations rtrack2_fops = {
 	.open           = video_exclusive_open,
 	.release        = video_exclusive_release,
 	.ioctl		= video_ioctl2,
+#ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
+#endif
 	.llseek         = no_llseek,
 };