nvme: change data type of lba_shift

u8 fits the need, so stop using int for it.

Signed-off-by: Kanchan Joshi <[email protected]>
Reviewed-by: Sagi Grimberg <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Signed-off-by: Keith Busch <[email protected]>

Author: Kanchan Joshi

drivers/nvme/host/nvme.h

@@ -470,7 +470,7 @@ struct nvme_ns_head {
 	struct nvme_effects_log *effects;
 	u64			nuse;
 	unsigned		ns_id;
-	int			lba_shift;
+	u8			lba_shift;
 	u16			ms;
 	u16			pi_size;
 	u8			pi_type;