meta-google: libconfig: Add native bbclass

Needed to build a native conf2struct, ultimately packaging sslh

Google-Bug-Id: 179618161
Upstream: 8ac594bdf054082ca6dbe35c4345759fe4c31669
Change-Id: I19f37ed554c9c37f90993fc4d972d9f18d622416
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/meta-google/recipes-extended/libconfig/libconfig_%.bbappend b/meta-google/recipes-extended/libconfig/libconfig_%.bbappend
new file mode 100644
index 0000000..d6f5869
--- /dev/null
+++ b/meta-google/recipes-extended/libconfig/libconfig_%.bbappend
@@ -0,0 +1 @@
+BBCLASSEXTEND += "native"