Add human-readable name of SGSN_AUTH_AUTHENTICATE
In commit 4adb136da63a1d3ed523ad85e12fd99fc62f5701 we introduced
a new authentication state SGSN_AUTH_AUTHENTICATE, but we didn't
add that to auth_state_names[] resulting in log messages printing
it abut 'unknown 0x1' rather than something more useful.
diff --git a/openbsc/src/gprs/sgsn_auth.c b/openbsc/src/gprs/sgsn_auth.c
index f0c4316..4b69a0d 100644
--- a/openbsc/src/gprs/sgsn_auth.c
+++ b/openbsc/src/gprs/sgsn_auth.c
@@ -30,6 +30,7 @@
{ SGSN_AUTH_ACCEPTED, "accepted"},
{ SGSN_AUTH_REJECTED, "rejected"},
{ SGSN_AUTH_UNKNOWN, "unknown"},
+ { SGSN_AUTH_AUTHENTICATE, "authenticate" },
{ 0, NULL }
};