[U-Boot] [PATCH] imx: serial_mxc: use CONFIG_IS_ENABLED instead of ifdef

[Simon Glass]

On Tue, 19 Feb 2019 at 21:07, Adam Ford <aford173 at gmail.com> wrote:
>
> Kconfig allows boards to configured with DM_SERIAL and still
> have SPL_DM_SERIAL disabled.  This patch changes the ifdef's
> to CONFIG_IS_ENABLED to allow the modes to differ between
> SPL and U-Boot.
>
> Signed-off-by: Adam Ford <aford173 at gmail.com>

Reviewed-by: Simon Glass <sjg at chromium.org>