serial: bfin-uart: Request CTS GPIO PIN when the serial device starts up.
Serial device may be probed earlier before GPIOLIB is initialized. Requesting and configuring CTS GPIO PIN fails in that early stage. Do it when the serial device really starts up. Signed-off-by: NSonic Zhang <sonic.zhang@analog.com> Acked-by: NAlan Cox <alan@linux.intel.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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