Update recipes to refelct osmo-iuh and osmo-hnbgw repo split

Since version 1.2.0 in both repos, osmo-hnbgw binary is placed in its
own repository, and no longer available in osmo-iuh.git.

Change-Id: I3ced52c1a9fccca34fe7c4ec245363d041105c2b
diff --git a/recipes-osmocom/osmo-hnbgw/osmo-hnbgw.inc b/recipes-osmocom/osmo-hnbgw/osmo-hnbgw.inc
new file mode 100644
index 0000000..3e45f9b
--- /dev/null
+++ b/recipes-osmocom/osmo-hnbgw/osmo-hnbgw.inc
@@ -0,0 +1,23 @@
+DESCRIPTION = "Osmocom HNB-GW implementation"
+HOMEPAGE = "https://osmocom.org/projects/osmohnbgw"
+LICENSE = "AGPLv3"
+LIC_FILES_CHKSUM = "file://COPYING;md5=73f1eb20517c55bf9493b7dd6e480788"
+
+DEPENDS = "libosmocore libosmo-netif libosmo-sccp osmo-iuh libasn1c lksctp-tools"
+
+INC_PR="r0.${META_TELEPHONY_OSMO_INC}"
+
+# Workaround to oe-core meta/site/* CONFIG_SITE files passed to autoconf forcing unavailability of netinet/sctp.h.
+# Patch fixing issue upstream: https://patchwork.openembedded.org/patch/168892/
+CACHED_CONFIGUREVARS += "ac_cv_header_netinet_sctp_h=yes"
+
+inherit autotools pkgconfig systemd
+
+PACKAGECONFIG ??= "\
+    ${@bb.utils.filter('DISTRO_FEATURES', 'systemd', d)} \
+    "
+PACKAGECONFIG[systemd] = "--with-systemdsystemunitdir=${systemd_system_unitdir},--without-systemdsystemunitdir"
+
+SYSTEMD_SERVICE_${PN} = "${PN}.service"
+
+CONFFILES_osmo-hnbgw = "${sysconfdir}/osmocom/osmo-hnbgw.cfg"