scsi: be2iscsi: Make some variables static

scsi: be2iscsi: Make some variables static

smatch reports several warnings:

drivers/scsi/be2iscsi/be_main.c:148:1: warning:
  symbol 'dev_attr_beiscsi_log_enable' was not declared. Should it be static?
drivers/scsi/be2iscsi/be_main.c:158:1: warning:
  symbol 'dev_attr_beiscsi_drvr_ver' was not declared. Should it be static?
drivers/scsi/be2iscsi/be_main.c:159:1: warning:
  symbol 'dev_attr_beiscsi_adapter_family' was not declared. Should it be static?
drivers/scsi/be2iscsi/be_main.c:160:1: warning:
  symbol 'dev_attr_beiscsi_fw_ver' was not declared. Should it be static?
drivers/scsi/be2iscsi/be_main.c:161:1: warning:
  symbol 'dev_attr_beiscsi_phys_port' was not declared. Should it be static?
drivers/scsi/be2iscsi/be_main.c:162:1: warning:
  symbol 'dev_attr_beiscsi_active_session_count' was not declared. Should it be static?
drivers/scsi/be2iscsi/be_main.c:164:1: warning:
  symbol 'dev_attr_beiscsi_free_session_count' was not declared. Should it be static ?

These variables are only used in be_main.c, so should be static.

Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20230314005157.536918-1-trix@redhat.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>