python3-kiv: 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-python/recipes-devtools/python/python3-kivy_2.3.1.bb

@@ -46,7 +46,7 @@ ANY_OF_DISTRO_FEATURES = "x11 wayland"
 DEPENDS += " \
     gstreamer1.0 \
     gstreamer1.0-python \
-    libsdl2 \
+    virtual/libsdl2 \
     libsdl2-ttf \
     libsdl2-image \
     libsdl2-mixer \