scsi: scsi_debugfs: Use for_each_set_bit to simplify code

We can use for_each_set_bit() to slightly simplify the code.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/scsi_debugfs.c

 // SPDX-License-Identifier: GPL-2.0
+#include <linux/bitops.h>
 #include <linux/seq_file.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_dbg.h>
@@ -18,9 +19,7 @@ static int scsi_flags_show(struct seq_file *m, const unsigned long flags,
 	bool sep = false;
 	int i;
 
-	for (i = 0; i < sizeof(flags) * BITS_PER_BYTE; i++) {
-		if (!(flags & BIT(i)))
-			continue;
+	for_each_set_bit(i, &flags, BITS_PER_LONG) {
 		if (sep)
 			seq_puts(m, "|");
 		sep = true;