debian: fix build errors with libosmogsm and libosmoctrl

libosmogsm: the transition from 5 to 6 wasn't done properly. Fixed version number.
libosmoctrl: missing definition in debian/control and also missing libosmoctrl0.install.
diff --git a/debian/control b/debian/control
index 3204f0f..74b825a 100644
--- a/debian/control
+++ b/debian/control
@@ -20,7 +20,7 @@
 Depends: ${shlibs:Depends}, ${misc:Depends}
 Description: Osmo codec library
 
-Package: libosmocore4
+Package: libosmocore5
 Section: libs
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}
@@ -32,7 +32,7 @@
 Depends: ${shlibs:Depends}, ${misc:Depends}
 Description: Osmo GPRS GB library
 
-Package: libosmogsm6
+Package: libosmogsm5
 Section: libs
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}
@@ -44,6 +44,12 @@
 Depends: ${shlibs:Depends}, ${misc:Depends}
 Description: Osmo VTY library
 
+Package: libosmoctrl0
+Section: libs
+Architecture: any
+Depends: ${shlibs:Depends}, ${misc:Depends}
+Description: Osmo control library
+
 Package: libosmocore-dev
 Section: libdevel
 Architecture: any