fate: add pam image regression test

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Janne Grunau <janne-libav@jannau.net>

tests/lavf-regression.sh

@@ -171,6 +171,10 @@ if [ -n "$do_jpg" ] ; then
 do_image_formats jpg "-pix_fmt yuvj420p" "-f image2"
 fi
 
+if [ -n "$do_pam" ] ; then
+do_image_formats pam
+fi
+
 if [ -n "$do_pcx" ] ; then
 do_image_formats pcx
 fi

tests/ref/lavf/pam

+0dce5565222cf0f8b309467f279aecd2 *./tests/data/images/pam/02.pam
+./tests/data/images/pam/%02d.pam CRC=0x6da01946
+  304191 ./tests/data/images/pam/02.pam