Revert "serial: Make uart_handle_cts_change() status param bool active"

This reverts commit 04de0656 which is
commit 968d6457 upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I47ee264f550533f670ef559661d69b923e2ca6c4
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>