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/drivers/net/ftmac110.c b/drivers/net/ftmac110.c
index 98c4f09..aef89a2 100644
--- a/drivers/net/ftmac110.c
+++ b/drivers/net/ftmac110.c
@@ -425,7 +425,7 @@
 	dev->recv = ftmac110_recv;
 
 	if (!eth_getenv_enetaddr_by_index("eth", card_nr, dev->enetaddr))
-		eth_random_addr(dev->enetaddr);
+		net_random_ethaddr(dev->enetaddr);
 
 	/* allocate tx descriptors (it must be 16 bytes aligned) */
 	chip->txd = dma_alloc_coherent(