osmo-sgsn: Introduce recipe

Change-Id: Ia7e35660598bfd87917728c521c1fba827e98d68
diff --git a/recipes-osmocom/osmo-sgsn/osmo-sgsn_git.bb b/recipes-osmocom/osmo-sgsn/osmo-sgsn_git.bb
new file mode 100644
index 0000000..e94618f
--- /dev/null
+++ b/recipes-osmocom/osmo-sgsn/osmo-sgsn_git.bb
@@ -0,0 +1,7 @@
+require ${PN}.inc
+
+S = "${WORKDIR}/git"
+SRCREV = "341d446b4db87b48812afe8d2149ebc840e8a357"
+SRC_URI = "git://git.osmocom.org/osmo-sgsn.git;protocol=git"
+PV = "0.1.0+gitr${SRCPV}"
+PR = "${INC_PR}.0"