libnm: fix placement of some "Since:" tags

libnm-client-impl/nm-client.c:8398: warning: multi-line since docs found
  libnm-client-impl/nm-device-macvlan.c:115: warning: multi-line since docs found
  libnm-client-impl/nm-device-vxlan.c:540: warning: multi-line since docs found
  libnm-client-impl/nm-device-vxlan.c:92: warning: multi-line since docs found
  libnm-core-impl/nm-setting-ethtool.c:41: warning: multi-line since docs found
  libnm-core-impl/nm-setting-ip-config.c:2475: warning: multi-line since docs found
  libnm-core-impl/nm-setting-ip-config.c:2504: warning: multi-line since docs found

src/libnm-client-impl/nm-client.c

@@ -8399,9 +8399,9 @@ nm_client_class_init(NMClientClass *client_class)
      *
      * Whether a connectivity checking service has been enabled.
      *
-     * Since: 1.10
-     *
      * The property setter is a synchronous D-Bus call. This is deprecated since 1.22.
+     *
+     * Since: 1.10
      */
     obj_properties[PROP_CONNECTIVITY_CHECK_ENABLED] =
         g_param_spec_boolean(NM_CLIENT_CONNECTIVITY_CHECK_ENABLED,

src/libnm-client-impl/nm-device-macvlan.c

@@ -120,11 +120,11 @@ nm_device_macvlan_get_tap(NMDeviceMacvlan *device)
  * Returns: the hardware address. This is the internal string used by the
  * device, and must not be modified.
  *
- * Since: 1.2
- *
  * This property is not implemented yet, and the function always return NULL.
  *
  * Deprecated: 1.24: Use nm_device_get_hw_address() instead.
+ *
+ * Since: 1.2
  **/
 const char *
 nm_device_macvlan_get_hw_address(NMDeviceMacvlan *device)

src/libnm-client-impl/nm-device-vxlan.c

@@ -96,10 +96,10 @@ nm_device_vxlan_get_hw_address(NMDeviceVxlan *device)
  *
  * Returns: %TRUE if the device has carrier.
  *
- * Since: 1.2
- *
  * This property is not implemented yet, and the function always returns
  * FALSE.
+ *
+ * Since: 1.2
  **/
 gboolean
 nm_device_vxlan_get_carrier(NMDeviceVxlan *device)
@@ -541,9 +541,9 @@ nm_device_vxlan_class_init(NMDeviceVxlanClass *klass)
      *
      * Whether the device has carrier.
      *
-     * Since: 1.2
-     *
      * This property is not implemented yet, and the property is always FALSE.
+     *
+     * Since: 1.2
      **/
     obj_properties[PROP_CARRIER] = g_param_spec_boolean(NM_DEVICE_VXLAN_CARRIER,
                                                         "",

src/libnm-core-impl/nm-setting-ethtool.c

@@ -45,11 +45,11 @@ get_variant_type_from_ethtool_id(NMEthtoolID ethtool_id)
  *
  * %Returns: %TRUE, if @optname is valid
  *
- * Since: 1.20
- *
  * Note that nm_ethtool_optname_is_feature() was first added to the libnm header files
  * in 1.14.0 but forgot to actually add to the library. This happened belatedly in 1.20.0 and
  * the stable versions 1.18.2, 1.16.4 and 1.14.8 (with linker version "libnm_1_14_8").
+ *
+ * Since: 1.20
  */
 gboolean
 nm_ethtool_optname_is_feature(const char *optname)

src/libnm-core-impl/nm-setting-ip-config.c

@@ -2481,10 +2481,10 @@ nm_ip_routing_rule_set_suppress_prefixlength(NMIPRoutingRule *self, gint32 suppr
  *
  * Returns: %TRUE if a uid range is set.
  *
- * Since: 1.34
- *
  * This API was wrongly introduced in the header files for 1.32, but the
  * symbols were not exported. The API only works since 1.34 and newer.
+ *
+ * Since: 1.34
  */
 gboolean
 nm_ip_routing_rule_get_uid_range(const NMIPRoutingRule *self,
@@ -2509,10 +2509,10 @@ nm_ip_routing_rule_get_uid_range(const NMIPRoutingRule *self,
  * For a valid range, start must be less or equal to end.
  * If set to an invalid range, the range gets unset.
  *
- * Since: 1.34
- *
  * This API was wrongly introduced in the header files for 1.32, but the
  * symbols were not exported. The API only works since 1.34 and newer.
+ *
+ * Since: 1.34
  */
 void
 nm_ip_routing_rule_set_uid_range(NMIPRoutingRule *self,