[SCSI] zfcp: Print some messages only during ERP

When statistics are polled from sysfs, the statistics use the same
commands as the adapter initialization. Change the messages printed
here, so they are only printed during initialization and not for each
poll of adapter data.

Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>