[U-Boot] [U-Boot, v2, 28/42] Convert CONFIG_CMD_STRINGS to Kconfig

[Philipp Tomsich]

> This converts the following to Kconfig:
>    CONFIG_CMD_STRINGS
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
> ---
> 
> Changes in v2: None
> 
>  cmd/Kconfig                  | 8 ++++++++
>  include/configs/vct.h        | 1 -
>  scripts/config_whitelist.txt | 1 -
>  3 files changed, 8 insertions(+), 2 deletions(-)
> 

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