This gave us more freedom to change/add/remove operations without
recompiling all device driver.

Typically, Carrier board implement the fmc operations, so they will not
use these helpers.
Signed-off-by: NFederico Vaga <federico.vaga@cern.ch>
Tested-by: NPat Riehecky <riehecky@fnal.gov>
Acked-by: NAlessandro Rubini <rubini@gnudd.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>