greybus: battery-gb: convert to use gb_operation_sync

This converts the battery protocol driver to use gb_operation_sync,
removing the hand-rolled version of the same function.

Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Reviewed-by: Alex Elder <elder@linaro.org>
This commit is contained in:
Greg Kroah-Hartman 2014-11-23 17:45:19 -08:00
commit d5671a6a24