include: add enum for UTRAN cipher

Change-Id: I4b9baff2c2fbd0e339fc769cc69cce58d3a72cdf
diff --git a/include/Makefile.am b/include/Makefile.am
index 7df651a..49402d0 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -64,6 +64,7 @@
                        osmocom/crypt/auth.h \
                        osmocom/crypt/gprs_cipher.h \
                        osmocom/crypt/kdf.h \
+                       osmocom/crypt/utran_cipher.h \
 		       osmocom/ctrl/control_cmd.h \
 		       osmocom/ctrl/control_if.h \
 		       osmocom/ctrl/ports.h \