net: cosmetic: Fix checkpatch.pl failures in net.c

Finish eliminating CamelCase from net.c and other failures

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Simon Glass <sjg@chromium.org>

net/ping.c

@@ -74,7 +74,7 @@ static void ping_timeout_handler(void)
 void ping_start(void)
 {
 	printf("Using %s device\n", eth_get_name());
-	NetSetTimeout(10000UL, ping_timeout_handler);
+	net_set_timeout_handler(10000UL, ping_timeout_handler);
 
 	ping_send();
 }