PFCP: add DLPFCP and osmo-upf port numbers

Related: SYS#5599
Change-Id: I0a46b147ec6a76d909df28136cfd2b764b2c75ea
diff --git a/include/osmocom/ctrl/ports.h b/include/osmocom/ctrl/ports.h
index 56d663a..d287940 100644
--- a/include/osmocom/ctrl/ports.h
+++ b/include/osmocom/ctrl/ports.h
@@ -30,4 +30,6 @@
 #define OSMO_CTRL_PORT_SMLC	4272
 /* 4273 used by VTY interface */
 #define OSMO_CTRL_PORT_HNODEB	4274
+/* 4275: OSMO_VTY_PORT_UPF */
+#define OSMO_CTRL_PORT_UPF	4276
 /* When adding/changing port numbers, keep docs and wiki in sync. See above. */