[S390] Get rid of a lot of sparse warnings.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c
index 0aa3b1a..fd33537 100644
--- a/drivers/s390/scsi/zfcp_dbf.c
+++ b/drivers/s390/scsi/zfcp_dbf.c
@@ -469,7 +469,7 @@
 	return len;
 }
 
-struct debug_view zfcp_hba_dbf_view = {
+static struct debug_view zfcp_hba_dbf_view = {
 	"structured",
 	NULL,
 	&zfcp_dbf_view_header,
@@ -693,7 +693,7 @@
 	return len;
 }
 
-struct debug_view zfcp_san_dbf_view = {
+static struct debug_view zfcp_san_dbf_view = {
 	"structured",
 	NULL,
 	&zfcp_dbf_view_header,
@@ -884,7 +884,7 @@
 	return len;
 }
 
-struct debug_view zfcp_scsi_dbf_view = {
+static struct debug_view zfcp_scsi_dbf_view = {
 	"structured",
 	NULL,
 	&zfcp_dbf_view_header,