Debian: osmo-bsc-dbg should cover only the osmo-bsc package

Change-Id: I3d2e7ce589e78bb4da6de3567462a6be4194174e
diff --git a/debian/rules b/debian/rules
index fa93cf5..71ffbf1 100755
--- a/debian/rules
+++ b/debian/rules
@@ -53,7 +53,7 @@
 
 # See https://www.debian.org/doc/manuals/developers-reference/best-pkging-practices.html#bpp-dbg
 override_dh_strip:
-	dh_strip --dbg-package=osmo-bsc-dbg
+	dh_strip -posmo-bsc --dbg-package=osmo-bsc-dbg
 
 # Print test results in case of a failure
 override_dh_auto_test: