scsi: qla4xxx: Format SYSFS_FLAG_FW_SEL_BOOT as byte

qedi formats SYSFS_FLAG_FW_SEL_BOOT as a byte and the qla4xxx driver does
exactly the same thing. Align them for consistency.

Link: https://lore.kernel.org/r/20211130203813.12138-3-f.fainelli@gmail.comSuggested-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/qla4xxx/ql4_os.c

@@ -5734,7 +5734,7 @@ static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
 
 	switch (type) {
 	case ISCSI_BOOT_ETH_FLAGS:
-		rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
+		rc = sprintf(str, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT);
 		break;
 	case ISCSI_BOOT_ETH_INDEX:
 		rc = sprintf(str, "0\n");
@@ -5843,7 +5843,7 @@ qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
 			     (char *)&boot_conn->chap.intr_secret);
 		break;
 	case ISCSI_BOOT_TGT_FLAGS:
-		rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
+		rc = sprintf(str, "%d\n", (char)SYSFS_FLAG_FW_SEL_BOOT);
 		break;
 	case ISCSI_BOOT_TGT_NIC_ASSOC:
 		rc = sprintf(str, "0\n");