[PATCH v1 2/3] mx6ullevk: Move environment variables to .env file

[Peng Fan]

On Wed, Jun 10, 2026 at 01:24:23PM +0000, Aristo Chen wrote:
>Move the board environment from CFG_EXTRA_ENV_SETTINGS in the config
>header to board/nxp/mx6ullevk/mx6ullevk.env for better maintainability.
>The file is named after CONFIG_SYS_BOARD so it is selected automatically
>without setting CONFIG_ENV_SOURCE_FILE. Drop the now unused
>linux/stringify.h include.
>
>The generated default environment is unchanged. This was verified by
>comparing the output of scripts/get_default_envs.sh before and after the
>change, which produced identical results.
>
>Signed-off-by: Aristo Chen <aristo.chen at canonical.com>

Reviewed-by: Peng Fan <peng.fan at nxp.com>