Fix the following sparse warning:
drivers/scsi/megaraid/megaraid_sas_fusion.c:180:1: warning: symbol
'megasas_enable_intr_fusion' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_fusion.c:202:1: warning: symbol
'megasas_disable_intr_fusion' was not declared. Should it be static?
drivers/scsi/megaraid/megaraid_sas_fusion.c:4233:6: warning: symbol
'megasas_refire_mgmt_cmd' was not declared. Should it be static?
Link: https://lore.kernel.org/r/20200407092827.18074-4-yanaijie@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 
  * megasas_enable_intr_fusion -        Enables interrupts
  * @regs:                      MFI register set
  */
-void
+static void
 megasas_enable_intr_fusion(struct megasas_instance *instance)
 {
        struct megasas_register_set __iomem *regs;
  * megasas_disable_intr_fusion - Disables interrupt
  * @regs:                       MFI register set
  */
-void
+static void
 megasas_disable_intr_fusion(struct megasas_instance *instance)
 {
        u32 mask = 0xFFFFFFFF;
  * megasas_refire_mgmt_cmd :   Re-fire management commands
  * @instance:                          Controller's soft instance
 */
-void megasas_refire_mgmt_cmd(struct megasas_instance *instance,
+static void megasas_refire_mgmt_cmd(struct megasas_instance *instance,
                             bool return_ioctl)
 {
        int j;