debian: .install: split mgcp-client out of legacy-mgcp

Change-Id: I681e9a1299607ff3a30de34c043da499c471bc31
diff --git a/debian/libosmo-legacy-mgcp-dev.install b/debian/libosmo-legacy-mgcp-dev.install
index 5bd9dd0..4184fef 100644
--- a/debian/libosmo-legacy-mgcp-dev.install
+++ b/debian/libosmo-legacy-mgcp-dev.install
@@ -1,3 +1,4 @@
-usr/include
-usr/lib/*/*.so
-usr/lib/*/pkgconfig/*.pc
+usr/include/osmocom/legacy_mgcp
+usr/lib/*/*legacy-mgcp*.so
+usr/lib/*/*legacy-mgcp*.a
+usr/lib/*/pkgconfig/*legacy-mgcp*.pc