[U-Boot] [PATCH 03/20] serial: stm32: Fix warnings when compiling with W=1

[Patrick DELAUNAY]

Hi,

> From: Patrick DELAUNAY <patrick.delaunay at st.com>
> Sent: vendredi 21 juin 2019 15:27
> 
> This patch solves the following warnings:
> 
> drivers/serial/serial_stm32.c: In function 'stm32_serial_probe':
> warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
>   if (plat->clock_rate < 0) {
>                        ^
> 
> Signed-off-by: Patrice Chotard <patrice.chotard at st.com>
> Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
> ---
> 
>  drivers/serial/serial_stm32.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 

Applied to u-boot-stm32/master, thanks!

Patrick