[ffmpeg] Disable opencv for f25

[nchauvet]

commit 59746701dd30ca5d8890d64ca47113c560f71646
Author: Nicolas Chauvet <kwizart at gmail.com>
Date:   Thu Sep 8 09:07:15 2016 +0200

    Disable opencv for f25

 ffmpeg.spec | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/ffmpeg.spec b/ffmpeg.spec
index 53e9829..781326a 100644
--- a/ffmpeg.spec
+++ b/ffmpeg.spec
@@ -4,6 +4,12 @@
 #global date    20110612
 #global rel     rc1
 
+%if 0%{?fedora} >= 25
+# OpenCV 3.X has an overlinking issue - unsuitable for core libraries
+# Reported as https://github.com/opencv/opencv/issues/7001
+%global _without_opencv   1
+%endif
+
 %if 0%{?rhel}
 %global _without_frei0r   1
 %global _without_opencv   1