gegl: make use of virtual/libsdl2

Signed-off-by: Markus Volk <f_l_k@t-online.de>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-gnome/recipes-gimp/gegl/gegl_0.4.58.bb

@@ -43,7 +43,7 @@ PACKAGECONFIG[librsvg] = "-Dlibrsvg=enabled,-Dlibrsvg=disabled,librsvg"
 PACKAGECONFIG[pango] = "-Dpango=enabled -Dpangocairo=enabled,-Dpango=disabled -Dpangocairo=disabled,pango"
 PACKAGECONFIG[poppler] = "-Dpoppler=enabled,-Dpoppler=disabled,poppler"
 PACKAGECONFIG[sdl] = "-Dsdl1=enabled,-Dsdl1=disabled,libsdl"
-PACKAGECONFIG[sdl2] = "-Dsdl2=enabled,-Dsdl2=disabled,libsdl2"
+PACKAGECONFIG[sdl2] = "-Dsdl2=enabled,-Dsdl2=disabled,virtual/libsdl2"
 PACKAGECONFIG[tiff] = "-Dlibtiff=enabled,-Dlibtiff=disabled,tiff"
 PACKAGECONFIG[webp] = "-Dwebp=enabled,-Dwebp=disabled,libwebp"