net: Properly define functions with no parameters

Defining a function with no parameters as 'T foo()' is the deprecated
K&R style, and is not strictly equivalent to defining it as 'T foo(void)'.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/cris/eth_v10.c

@@ -1008,7 +1008,7 @@ e100_send_mdio_bit(unsigned char bit)
 }
 
 static unsigned char
-e100_receive_mdio_bit()
+e100_receive_mdio_bit(void)
 {
 	unsigned char bit;
 	*R_NETWORK_MGM_CTRL = 0;

net/core/dev.c

@@ -1798,7 +1798,7 @@ EXPORT_SYMBOL(netif_set_real_num_rx_queues);
  * This routine should set an upper limit on the number of RSS queues
  * used by default by multiqueue devices.
  */
-int netif_get_num_default_rss_queues()
+int netif_get_num_default_rss_queues(void)
 {
 	return min_t(int, DEFAULT_MAX_NUM_RSS_QUEUES, num_online_cpus());
 }