V4L/DVB (3597): Vivi: fix warning: implicit declaration of function 'in_interrupt'

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/vivi.c

@@ -26,6 +26,7 @@
 #include <linux/random.h>
 #include <linux/version.h>
 #include <linux/videodev2.h>
+#include <linux/interrupt.h>
 #include <media/video-buf.h>
 #include <media/v4l2-common.h>
 #include <linux/kthread.h>