tty: serial: fsl_lpuart: adjust SERIAL_FSL_LPUART_CONSOLE config dependency

Remove the limitation of SERIAL_FSL_LPUART=y,
as we may need enable this console while SERIAL_FSL_LPUART=m.

Signed-off-by: Jindong Yue <jindong.yue@nxp.com>
Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Link: https://lore.kernel.org/r/20220802101613.30879-1-sherry.sun@nxp.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>