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/rockchip/tinker_rk3288/tinker-rk3288.c b/board/rockchip/tinker_rk3288/tinker-rk3288.c
index c2872e7..790a921 100644
--- a/board/rockchip/tinker_rk3288/tinker-rk3288.c
+++ b/board/rockchip/tinker_rk3288/tinker-rk3288.c
@@ -29,7 +29,7 @@
 		return 0;
 
 	if (is_valid_ethaddr(ethaddr))
-		eth_setenv_enetaddr("ethaddr", ethaddr);
+		eth_env_set_enetaddr("ethaddr", ethaddr);
 
 	return 0;
 }