linux-phytec-fsl

serial: core: Unwrap tertiary assignment in uart_handle_dcd_change()

Prepare for spin lock assertion; move non-trivial assignment into
function body.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>