scsi: pm8001: Convert snprintf() to sysfs_emit()

Per filesystems/sysfs.rst, show() should only use sysfs_emit() or
sysfs_emit_at() when formatting the value to be returned to user space.

coccinelle complains that there are still a couple of functions that use
snprintf(). Convert them to sysfs_emit().

> ./drivers/scsi/pm8001/pm8001_ctl.c:883:8-16: WARNING: please use sysfs_emit

No functional change intended

CC: Jack Wang <jinpu.wang@cloud.ionos.com>
CC: James E.J. Bottomley <jejb@linux.ibm.com>
CC: Martin K. Petersen <martin.petersen@oracle.com>
CC: linux-scsi@vger.kernel.org
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Link: https://lore.kernel.org/r/20240116045151.3940401-32-lizhijian@fujitsu.com
Acked-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

Author: zhijianli88

drivers/scsi/pm8001/pm8001_ctl.c

@@ -880,9 +880,9 @@ static ssize_t pm8001_show_update_fw(struct device *cdev,
 	if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
 		pm8001_ha->fw_status = FLASH_OK;
 
-	return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
-			flash_error_table[i].err_code,
-			flash_error_table[i].reason);
+	return sysfs_emit(buf, "status=%x %s\n",
+			  flash_error_table[i].err_code,
+			  flash_error_table[i].reason);
 }
 static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUSR|S_IWGRP,
 	pm8001_show_update_fw, pm8001_store_update_fw);