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/BuR/common/common.c b/board/BuR/common/common.c
index 6bea9a4..eb34de9 100644
--- a/board/BuR/common/common.c
+++ b/board/BuR/common/common.c
@@ -670,7 +670,7 @@
 
 		if (mac) {
 			printf("using: %pM on ", mac);
-			eth_setenv_enetaddr("ethaddr", (const u8 *)mac);
+			eth_env_set_enetaddr("ethaddr", (const u8 *)mac);
 		}
 	}
 	writel(MII_MODE_ENABLE, &cdev->miisel);