scsi: mpi3mr: Make some symbols static

Fix the following warnings:

  drivers/scsi/mpi3mr/mpi3mr_os.c:24:5: warning: symbol 'prot_mask' was not declared. Should it be static?
  drivers/scsi/mpi3mr/mpi3mr_os.c:28:5: warning: symbol 'prot_guard_mask' was not declared. Should it be static?
  drivers/scsi/mpi3mr/mpi3mr_os.c:31:5: warning: symbol 'logging_level' was not declared. Should it be static?

Link: https://lore.kernel.org/r/20210604071407.1360742-1-yangyingliang@huawei.comReported-by: Hulk Robot <hulkci@huawei.com>
Acked-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/mpi3mr/mpi3mr.h

@@ -50,6 +50,7 @@
 /* Global list and lock for storing multiple adapters managed by the driver */
 extern spinlock_t mrioc_list_lock;
 extern struct list_head mrioc_list;
+extern int prot_mask;
 
 #define MPI3MR_DRIVER_VERSION	"00.255.45.01"
 #define MPI3MR_DRIVER_RELDATE	"12-December-2020"

drivers/scsi/mpi3mr/mpi3mr_fw.c

@@ -9,7 +9,6 @@
 
 #include "mpi3mr.h"
 #include <linux/io-64-nonatomic-lo-hi.h>
-extern int prot_mask;
 
 #if defined(writeq) && defined(CONFIG_64BIT)
 static inline void mpi3mr_writeq(__u64 b, volatile void __iomem *addr)

drivers/scsi/mpi3mr/mpi3mr_os.c

@@ -25,10 +25,10 @@ int prot_mask = -1;
 module_param(prot_mask, int, 0);
 MODULE_PARM_DESC(prot_mask, "Host protection capabilities mask, def=0x07");
 
-int prot_guard_mask = 3;
+static int prot_guard_mask = 3;
 module_param(prot_guard_mask, int, 0);
 MODULE_PARM_DESC(prot_guard_mask, " Host protection guard mask, def=3");
-int logging_level;
+static int logging_level;
 module_param(logging_level, int, 0);
 MODULE_PARM_DESC(logging_level,
 	" bits for enabling additional logging info (default=0)");