spark: implement stuff needed for PIP

note that this does now work well at least on st7162 and thus is not
really tested.


Origin commit data
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Branch: master
Commit: 642de31a8b
Author: Stefan Seyfried <seife@tuxbox-git.slipkontur.de>
Date: 2013-09-28 (Sat, 28 Sep 2013)



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This commit was generated by Migit

libspark/video_lib.h

@@ -120,6 +120,7 @@ class cVideo
 	private:
 		/* video device */
 		int fd;
+		unsigned int devnum;
 		/* apparently we cannot query the driver's state
 		   => remember it */
 		video_play_state_t playstate;