vxlan: port module param should be ushort

UDP ports are limited to 16 bits.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 117b7fa..f89a58b 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -70,8 +70,8 @@
  * The IANA assigned port is 4789, but the Linux default is 8472
  * for compatability with early adopters.
  */
-static unsigned int vxlan_port __read_mostly = 8472;
-module_param_named(udp_port, vxlan_port, uint, 0444);
+static unsigned short vxlan_port __read_mostly = 8472;
+module_param_named(udp_port, vxlan_port, ushort, 0444);
 MODULE_PARM_DESC(udp_port, "Destination UDP port");
 
 static bool log_ecn_error = true;