[net-next PATCH] net/mqprio: Fix build error due to non-exported symbol

From: Alexander Duyck <redacted>

I overlooked the fact that netdev_txq_to_tc was not an exported symbol. To
fix that I am providing the export for the symbol in order to avoid
breaking builds where mqprio is not built into the kernel.

Signed-off-by: Alexander Duyck <redacted>
---
 net/core/dev.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/net/core/dev.c b/net/core/dev.c
index fb766d906148..0aa255f3a866 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c

@@ -2008,6 +2008,7 @@ int netdev_txq_to_tc(struct net_device *dev, unsigned int txq)
 
 	return 0;
 }
+EXPORT_SYMBOL(netdev_txq_to_tc);
 
 #ifdef CONFIG_XPS
 static DEFINE_MUTEX(xps_map_mutex);