Fix sparse warnings:

drivers/scsi/megaraid/megaraid_sas_fusion.c:3369:1: warning: symbol 'complete_cmd_fusion' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_fusion.c:3535:6: warning: symbol 'megasas_sync_irqs' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_fusion.c:3554:1: warning: symbol 'megasas_complete_cmd_dpc_fusion' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_fusion.c:3573:13: warning: symbol 'megasas_isr_fusion' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_fusion.c:3604:1: warning: symbol 'build_mpt_mfi_pass_thru' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_fusion.c:3661:40: warning: symbol 'build_mpt_cmd' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_fusion.c:3688:1: warning: symbol 'megasas_issue_dcmd_fusion' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_fusion.c:3881:5: warning: symbol 'megasas_wait_for_outstanding_fusion' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_fusion.c:4005:6: warning: symbol 'megasas_refire_mgmt_cmd' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_fusion.c:4525:25: warning: symbol 'megasas_get_peer_instance' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_fusion.c:4825:7: warning: symbol 'megasas_fusion_crash_dump' 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>