libpcap: add native package

Add package libpcap-native required by recipe daq-native in layer
meta-networking. And daq-native is added to fix snort start error.

(From OE-Core rev: 12373003cc3753421321d558813b1de95667c192)

Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-connectivity/libpcap/libpcap.inc

@@ -38,3 +38,5 @@ CXXFLAGS_prepend = "-I${S} "
 do_configure_prepend () {
     sed -i -e's,^V_RPATH_OPT=.*$,V_RPATH_OPT=,' ${S}/pcap-config.in
 }
+
+BBCLASSEXTEND = "native"