scsi: megaraid_sas: Make some symbols static

Fix sparse warnings:

drivers/scsi/megaraid/megaraid_sas_base.c:271:1: warning: symbol 'megasas_issue_dcmd' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_base.c:2227:6: warning: symbol 'megasas_do_ocr' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_base.c:3194:25: warning: symbol 'megaraid_host_attrs' was not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/megaraid/megaraid_sas_base.c

@@ -292,7 +292,7 @@ void megasas_set_dma_settings(struct megasas_instance *instance,
 	}
 }
 
-void
+static void
 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 {
 	instance->instancet->fire_cmd(instance,
@@ -2249,7 +2249,7 @@ megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
 static void
 process_fw_state_change_wq(struct work_struct *work);
 
-void megasas_do_ocr(struct megasas_instance *instance)
+static void megasas_do_ocr(struct megasas_instance *instance)
 {
 	if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
 	(instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
@@ -3315,7 +3315,7 @@ static DEVICE_ATTR_RO(fw_cmds_outstanding);
 static DEVICE_ATTR_RO(dump_system_regs);
 static DEVICE_ATTR_RO(raid_map_id);
 
-struct device_attribute *megaraid_host_attrs[] = {
+static struct device_attribute *megaraid_host_attrs[] = {
 	&dev_attr_fw_crash_buffer_size,
 	&dev_attr_fw_crash_buffer,
 	&dev_attr_fw_crash_state,