fate: add h264 test for extreme cases in planar prediction

Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit e63dd5fb)

tests/fate/h264.mak

@@ -167,6 +167,7 @@ FATE_H264 = aud_mw_e                                                    \
 FATE_H264  := $(FATE_H264:%=fate-h264-conformance-%)                    \
               fate-h264-interlace-crop                                  \
               fate-h264-lossless                                        \
+              fate-h264-extreme-plane-pred                              \
 
 FATE_TESTS += $(FATE_H264)
 fate-h264: $(FATE_H264)
@@ -339,3 +340,4 @@ fate-h264-conformance-sva_nl2_e: CMD = framecrc  -i $(SAMPLES)/h264-conformance/
 
 fate-h264-interlace-crop: CMD = framecrc  -vframes 3 -i $(SAMPLES)/h264/interlaced_crop.mp4
 fate-h264-lossless: CMD = framecrc -i $(SAMPLES)/h264/lossless.h264
+fate-h264-extreme-plane-pred: CMD = framemd5 -strict 1 -vsync 0 -i $(SAMPLES)/h264/extreme-plane-pred.h264

tests/ref/fate/h264-extreme-plane-pred

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