scsi: print single-character strings with seq_putc

Using seq_putc to print a single character saves at least a strlen()
call and a memory access, and may also give a small .text reduction.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Reviewed-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/scsi/nsp32.c

@@ -1509,7 +1509,7 @@ static int nsp32_show_info(struct seq_file *m, struct Scsi_Host *host)
 				data->target[id].offset
 				);
 		}
-		seq_puts(m, "\n");
+		seq_putc(m, '\n');
 	}
 	return 0;
 }