osmo-hnbgw: depend on osmo-mgw

Fix for:
  | checking for LIBOSMOMGCPCLIENT... no
  | configure: error: Package requirements (libosmo-mgcp-client >= 1.9.0) were not met:
  |
  | No package 'libosmo-mgcp-client' found

Required since osmo-hnbgw Ib9b62e0145184b91c56ce5d8870760bfa49cc5a4.

Change-Id: I79b0525cff5030d72235640eddeabd7540f1bcf9
diff --git a/recipes-osmocom/osmo-hnbgw/osmo-hnbgw.inc b/recipes-osmocom/osmo-hnbgw/osmo-hnbgw.inc
index 3e45f9b..696c864 100644
--- a/recipes-osmocom/osmo-hnbgw/osmo-hnbgw.inc
+++ b/recipes-osmocom/osmo-hnbgw/osmo-hnbgw.inc
@@ -3,7 +3,7 @@
 LICENSE = "AGPLv3"
 LIC_FILES_CHKSUM = "file://COPYING;md5=73f1eb20517c55bf9493b7dd6e480788"
 
-DEPENDS = "libosmocore libosmo-netif libosmo-sccp osmo-iuh libasn1c lksctp-tools"
+DEPENDS = "libosmocore libosmo-netif libosmo-sccp osmo-iuh libasn1c lksctp-tools osmo-mgw"
 
 INC_PR="r0.${META_TELEPHONY_OSMO_INC}"