serdev: enable TTY port controller support by default
Amend the Serial device bus Kconfig entries to clarify that you most likely also want to enable TTY port controller support, and make SERIAL_DEV_CTRL_TTYPORT default to Y (when bus support is enabled). Note that the TTY port controller is currently the only in-kernel serdev controller implementation. Signed-off-by: NJohan Hovold <johan@kernel.org> Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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