add missing debian/libosmo-rspro1.install

In Change-Id I77c86455f9c36c16271bc8e7f8f3f72d682d23fd for some
reason libosmo-rspro0.install was not renamed/moved but deleted,
causing failures to build debian packages

Change-Id: I825d70abbbd067955d7038377692beea87545ce0
diff --git a/debian/libosmo-rspro1.install b/debian/libosmo-rspro1.install
new file mode 100644
index 0000000..2b3a85d
--- /dev/null
+++ b/debian/libosmo-rspro1.install
@@ -0,0 +1 @@
+usr/lib/*/libosmo-rspro*.so.*