net: cosmetic: Name ethaddr variables consistently

Use "_ethaddr" at the end of variables and drop CamelCase.
Make constant values actually 'const'.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/board/bf527-ezkit/bf527-ezkit.c b/board/bf527-ezkit/bf527-ezkit.c
index 88e1869..257775f 100644
--- a/board/bf527-ezkit/bf527-ezkit.c
+++ b/board/bf527-ezkit/bf527-ezkit.c
@@ -40,13 +40,13 @@
 		for (ret = 0; ret < 6; ++ret)
 			mac_addr[ret] = otp_mac_p[5 - ret];
 
-		if (is_valid_ether_addr(mac_addr))
+		if (is_valid_ethaddr(mac_addr))
 			valid_mac = true;
 	}
 
 	if (!valid_mac) {
 		puts("Warning: Generating 'random' MAC address\n");
-		eth_random_addr(mac_addr);
+		net_random_ethaddr(mac_addr);
 	}
 
 	eth_setenv_enetaddr("ethaddr", mac_addr);