V4L/DVB (5144): Restore VIDIOC_INT_[SG]_REGISTER calls

Add support for these ioctls to the video_ioctl2 system and the cx88
driver.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index fb96472..46eb71f 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -77,6 +77,9 @@
 extern long v4l_compat_ioctl32(struct file *file, unsigned int cmd,
 				unsigned long arg);
 
+/* Forward definition of v4l2-common.h defined structure */
+struct v4l2_register;
+
 /*
  * Newer version of video_device, handled by videodev2.c
  * 	This version moves redundant code from video device code to
@@ -296,6 +299,15 @@
 	int (*vidioc_log_status)       (struct file *file, void *fh);
 
 
+	/* Debugging ioctls */
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+	int (*vidioc_g_register)       (struct file *file, void *fh,
+					struct v4l2_register *reg);
+	int (*vidioc_s_register)       (struct file *file, void *fh,
+					struct v4l2_register *reg);
+#endif
+
+
 #ifdef OBSOLETE_OWNER /* to be removed soon */
 /* obsolete -- fops->owner is used instead */
 struct module *owner;