libconfuse: provide native and nativesdk support

Allows to use libconfuse in native tools like 'genimage'.

Signed-off-by: Enrico Jörns <ejo@pengutronix.de>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-support/libconfuse/libconfuse_3.3.bb

@@ -12,3 +12,5 @@ S = "${WORKDIR}/git"
 do_configure:prepend(){
     (cd ${S} && ${S}/autogen.sh)
 }
+
+BBCLASSEXTEND = "native nativesdk"