[gegl] docs: exclude v4l op from gallery generation

[Øyvind Kolås <ok src gnome org>]

commit b834d7c3d29c9bb744a864077a95586f7b2b0fa2
Author: Øyvind Kolås <pippin gimp org>
Date:   Thu Mar 22 19:40:00 2018 +0100

    docs: exclude v4l op from gallery generation
    
    v4l2 is already excluded, and there has been complaints about the random blink
    of the webcam LED that GEGL sometimes does.

 docs/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/docs/Makefile.am b/docs/Makefile.am
index 18ba2d4..deef8b0 100644
--- a/docs/Makefile.am
+++ b/docs/Makefile.am
@@ -85,7 +85,7 @@ CLEANFILES = README $(HTML_FILES) index.txt
 DISTCLEANFILES = index.txt
 MAINTAINERCLEANFILES = $(BUILT_EXTRA_DIST)
 
-exclusion_pattern = 
"load|buffer-source|pixbuf|nop|clone|convert-format|introspect|layer|image-compare|load|open-buffer|svg-load|exr-load|jpg-load|png-load|magick-load|box-blur|stretch-contrast|remap|matting-global|exp-combine|dropshadow|kuwahara|box-percentile|disc-percentile|snn-percentile|line-profile|buffer-cache|warp|mandelbrot|hstack|v4l2|integral-image"
+exclusion_pattern = 
"load|buffer-source|pixbuf|nop|clone|convert-format|introspect|layer|image-compare|load|open-buffer|svg-load|exr-load|jpg-load|png-load|magick-load|box-blur|stretch-contrast|remap|matting-global|exp-combine|dropshadow|kuwahara|box-percentile|disc-percentile|snn-percentile|line-profile|buffer-cache|warp|mandelbrot|hstack|v4l2|v4l|integral-image"
 
 all-local: $(HTML_FILES) examples