api: new 'attached RLOS' registration state

Reporting the state when the UE attaches to access restricted local
operator services.

src/mm-base-bearer.c

@@ -480,6 +480,7 @@ modem_3gpp_registration_state_changed (MMIfaceModem3gpp *modem,
     case MM_MODEM_3GPP_REGISTRATION_STATE_HOME_SMS_ONLY:
     case MM_MODEM_3GPP_REGISTRATION_STATE_HOME_CSFB_NOT_PREFERRED:
     case MM_MODEM_3GPP_REGISTRATION_STATE_SEARCHING:
+    case MM_MODEM_3GPP_REGISTRATION_STATE_ATTACHED_RLOS:
         self->priv->reason_3gpp = CONNECTION_FORBIDDEN_REASON_NONE;
         break;
     case MM_MODEM_3GPP_REGISTRATION_STATE_ROAMING:

src/mm-modem-helpers.c

@@ -2096,8 +2096,8 @@ mm_3gpp_parse_creg_response (GMatchInfo                    *info,
         return FALSE;
     }
 
-    /* 'roaming (csfb not preferred)' is the last valid state */
-    if (stat > MM_MODEM_3GPP_REGISTRATION_STATE_ROAMING_CSFB_NOT_PREFERRED) {
+    /* 'attached RLOS' is the last valid state */
+    if (stat > MM_MODEM_3GPP_REGISTRATION_STATE_ATTACHED_RLOS) {
         mm_obj_warn (log_object, "unknown registration state value '%lu'", stat);
         stat = MM_MODEM_3GPP_REGISTRATION_STATE_UNKNOWN;
     }