[U-Boot] [U-Boot,v2,29/42] gpio: Drop sx151x driver

[Philipp Tomsich]

> This driver is not used in U-Boot. Drop it and its associated CONFIG
> options.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
> ---
> 
> Changes in v2:
> - Drop include/sx151x.h also
> 
>  drivers/gpio/Makefile        |   1 -
>  drivers/gpio/sx151x.c        | 242 -------------------------------------------
>  include/sx151x.h             |  17 ---
>  scripts/config_whitelist.txt |   3 -
>  4 files changed, 263 deletions(-)
>  delete mode 100644 drivers/gpio/sx151x.c
>  delete mode 100644 include/sx151x.h
> 

Reviewed-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>