s390/ptdump: Use seq_puts() in pt_dump_seq_puts() macro

s390/ptdump: Use seq_puts() in pt_dump_seq_puts() macro

The pt_dump_seq_puts() macro incorrectly uses seq_printf() instead of
seq_puts(). This is both a performance issue and conceptually wrong,
as the macro name suggests plain string output (puts) but the
implementation uses formatted output (printf).

The macro is used in dump_pagetables.c:67-68 and 131 to output
constant strings. Using seq_printf() adds unnecessary overhead for
format string parsing.

Signed-off-by: Josephine Pfeiffer <hi@josie.lol>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>