serial: stm32: Factor out GPIO RTS toggling into separate function

Pull out the GPIO RTS enable and disable handling into separate function.
Limit the scope of GPIO RTS toggling only to GPIO emulated RS485 too.

Signed-off-by: Marek Vasut <[email protected]>
Cc: Alexandre Torgue <[email protected]>
Cc: Erwan Le Ray <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Jean Philippe Romain <[email protected]>
Cc: Valentin Caron <[email protected]>
Cc: [email protected]
Cc: [email protected]
To: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

0 files changed, 0 insertions, 0 deletions