Update i386 code (sc520_cdp)

Attempt to bring i386 / sc520 inline with master

Signed-off-by: Graeme Russ <graeme.russ@gmail.com>
diff --git a/lib_i386/video_bios.c b/lib_i386/video_bios.c
index 45f78e2..ce96a3e 100644
--- a/lib_i386/video_bios.c
+++ b/lib_i386/video_bios.c
@@ -136,6 +136,8 @@
 
 #endif
 
+#ifdef CONFIG_VIDEO
+
 static int probe_isa_video(void)
 {
 	u32 ptr;
@@ -217,3 +219,4 @@
 	return 1;
 
 }
+#endif