[SCSI] bfa: fix regular sparse check warnings.

Fix all sparse check warnings from make C=2.

Signed-off-by: Maggie <xmzhang@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/bfa/bfad_drv.h b/drivers/scsi/bfa/bfad_drv.h
index d5ce234..b9bcb0b 100644
--- a/drivers/scsi/bfa/bfad_drv.h
+++ b/drivers/scsi/bfa/bfad_drv.h
@@ -263,10 +263,10 @@
  */
 #define nextLowerInt(x)                         \
 do {                                            \
-	int i;                                  \
+	int __i;                                  \
 	(*x)--;					\
-	for (i = 1; i < (sizeof(int)*8); i <<= 1) \
-		(*x) = (*x) | (*x) >> i;	\
+	for (__i = 1; __i < (sizeof(int)*8); __i <<= 1) \
+		(*x) = (*x) | (*x) >> __i;	\
 	(*x)++;					\
 	(*x) = (*x) >> 1;			\
 } while (0)