env: Rename eth_setenv_enetaddr() to eth_env_set_enetaddr()

Rename this function for consistency with env_set().

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c
index aaa3a42..7ff7b26 100644
--- a/board/raspberrypi/rpi/rpi.c
+++ b/board/raspberrypi/rpi/rpi.c
@@ -300,7 +300,7 @@
 		return;
 	}
 
-	eth_setenv_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
+	eth_env_set_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
 
 	if (!getenv("ethaddr"))
 		env_set("ethaddr", getenv("usbethaddr"));