x86: galileo: Convert to text environment

Use the common include.

Drop everything from the config.h file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> # Intel Edison
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/board/intel/galileo/galileo.env b/board/intel/galileo/galileo.env
new file mode 100644
index 0000000..83e77bb
--- /dev/null
+++ b/board/intel/galileo/galileo.env
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
+ */
+
+#include <env/x86.env>
+
+/* use just serial */
+stdin=serial
+stdout=serial
+stderr=serial