mpt2sas: fix for unused variable 'event_data' warning

mpt2sas: fix for unused variable 'event_data' warning

commit c3a634bf78242177fba9c85deb709e7b63ed0ef1 upstream.

If CONFIG_SCSI_MPT2SAS_LOGGING is undefined, then these warnings are emitted

drivers/scsi/mpt2sas/mpt2sas_scsih.c: In function '_scsih_sas_broadcast_primitive_event'
drivers/scsi/mpt2sas/mpt2sas_scsih.c:5810:40: warning: unused variable 'event_data'

Use pr_info() function instead of dewtprintk().

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>