debian: Correct the path for the binaries.
diff --git a/openbsc/debian/osmocom-gbproxy.install b/openbsc/debian/osmocom-gbproxy.install
index 0194c67..ba3f6ee 100644
--- a/openbsc/debian/osmocom-gbproxy.install
+++ b/openbsc/debian/osmocom-gbproxy.install
@@ -1 +1 @@
-/usr/sbin/osmo-gbproxy
+/usr/bin/osmo-gbproxy