[PATCH] cmd: fix do_adc_single()

[Simon Glass]

On Sun, 3 Jul 2022 at 06:49, Vyacheslav Bocharov <adeep at lexina.in> wrote:
>
> The source code contains an error:
> - argv[2] contains <channel> arg, variable for env_set is in argv[3]
> - number of args is 4
>
> Revert 54d24d72601321f4470c4edf31c6b29adae424a7
>   cmd: simplify do_adc_single()
>
> Fixes 9de612ae4ded53f742f5f99929c06d0839471ced
>   cmd: adc: Add support for storing ADC result in env variable
> ---
>  cmd/adc.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)

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

This could use some docs in doc/usage/cmd/