memory-EMIF: Use seq_putc() in emif_regdump_show()

A single character (line break) should be put into a sequence.
Thus use the corresponding function "seq_putc".

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>

drivers/memory/emif.c

@@ -127,7 +127,7 @@ static int emif_regdump_show(struct seq_file *s, void *unused)
 
 	for (i = 0; i < EMIF_MAX_NUM_FREQUENCIES && regs_cache[i]; i++) {
 		do_emif_regdump_show(s, emif, regs_cache[i]);
-		seq_printf(s, "\n");
+		seq_putc(s, '\n');
 	}
 
 	return 0;