net: cleanup unsigned to unsigned int

Use of "unsigned int" is preferred to bare "unsigned" in net tree.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/nfc/nfc.h b/include/net/nfc/nfc.h
index bac070b..79955a2 100644
--- a/include/net/nfc/nfc.h
+++ b/include/net/nfc/nfc.h
@@ -86,7 +86,7 @@
 };
 
 struct nfc_dev {
-	unsigned idx;
+	unsigned int idx;
 	struct nfc_target *targets;
 	int n_targets;
 	int targets_generation;