devlink: Move netdev_to_devlink helpers to devlink.c

Both netdev_to_devlink and netdev_to_devlink_port are used in devlink.c
only, so move them in order to reduce their scope.
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

include/net/devlink.h

@@ -1486,23 +1486,6 @@ void *devlink_priv(struct devlink *devlink);
 struct devlink *priv_to_devlink(void *priv);
 struct device *devlink_to_dev(const struct devlink *devlink);
 
-static inline struct devlink_port *
-netdev_to_devlink_port(struct net_device *dev)
-{
-	if (dev->netdev_ops->ndo_get_devlink_port)
-		return dev->netdev_ops->ndo_get_devlink_port(dev);
-	return NULL;
-}
-
-static inline struct devlink *netdev_to_devlink(struct net_device *dev)
-{
-	struct devlink_port *devlink_port = netdev_to_devlink_port(dev);
-
-	if (devlink_port)
-		return devlink_port->devlink;
-	return NULL;
-}
-
 struct ib_device;
 
 struct net *devlink_net(const struct devlink *devlink);

net/core/devlink.c

@@ -11381,6 +11381,24 @@ static void __devlink_compat_running_version(struct devlink *devlink,
 	nlmsg_free(msg);
 }
 
+static struct devlink_port *netdev_to_devlink_port(struct net_device *dev)
+{
+	if (!dev->netdev_ops->ndo_get_devlink_port)
+		return NULL;
+
+	return dev->netdev_ops->ndo_get_devlink_port(dev);
+}
+
+static struct devlink *netdev_to_devlink(struct net_device *dev)
+{
+	struct devlink_port *devlink_port = netdev_to_devlink_port(dev);
+
+	if (!devlink_port)
+		return NULL;
+
+	return devlink_port->devlink;
+}
+
 void devlink_compat_running_version(struct net_device *dev,
 				    char *buf, size_t len)
 {