greybus: gpio-gb: convert to use gb_operation_sync

This converts the GPIO protocol driver to use gb_operation_sync,
removing lots of places where the create/send/destroy pattern was being
used to send greybus messages.

Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
1 file changed
tree: f0c36f28ce1dd9753ed7562fca8b66fd50cf19dc
  1. drivers/