env: Rename eth_getenv_enetaddr() to eth_env_get_enetaddr()

Rename this function for consistency with env_get().

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/net/dc2114x.c b/drivers/net/dc2114x.c
index 8245cf5..f38f36b 100644
--- a/drivers/net/dc2114x.c
+++ b/drivers/net/dc2114x.c
@@ -750,7 +750,7 @@
 	uchar enetaddr[6];
 
 	/* Ethernet Addr... */
-	if (!eth_getenv_enetaddr("ethaddr", enetaddr))
+	if (!eth_env_get_enetaddr("ethaddr", enetaddr))
 		return;
 	eeprom[0x0a] = (enetaddr[1] << 8) | enetaddr[0];
 	eeprom[0x0b] = (enetaddr[3] << 8) | enetaddr[2];