osmocom-3g: Fix recipe for 3G image

Don't include mncc-upgrage patch and fix path for S
Install the service files manually instead of using foreach
diff --git a/recipes-osmocom/osmocom-3g/osmocom-3g_git.bb b/recipes-osmocom/osmocom-3g/osmocom-3g_git.bb
index b31d290..7128b69 100644
--- a/recipes-osmocom/osmocom-3g/osmocom-3g_git.bb
+++ b/recipes-osmocom/osmocom-3g/osmocom-3g_git.bb
@@ -6,7 +6,6 @@
 
 # openbsc.git branch vlr_3G
 SRCREV = "2e8ecf3af3c1ffab29357f45e4576b2d3b9268e4"
-SRC_URI += "git://git.osmocom.org/openbsc.git;protocol=git \
-    file://upgrade-mncc-version.patch"
+SRC_URI += "git://git.osmocom.org/openbsc.git;protocol=git"
 
-S = "${WORKDIR}/git/osmocom-3g"
+S = "${WORKDIR}/git/openbsc"