common: Kconfig: SYS_CONSOLE_ENV_OVERWRITE depends on SYS_CONSOLE_IS_IN_ENV

CONFIG_SYS_CONSOLE_ENV_OVERWRITE is implemented in common/console.c
when "#if CONFIG_IS_ENABLED(SYS_CONSOLE_IS_IN_ENV)" is met.

It is recommended to add dependency constraints to its definition.

Suggested-by: Yanjie Ren <renyanjie01@gmail.com>
Signed-off-by: Ying Sun <sunying@nj.iscas.ac.cn>