ata: pata_parport: move pata_parport.h to drivers/ata/pata_parport

Now that paride is gone, pata_parport.h does not need to be in
include/linux. Move it to drivers/ata/pata_parport.

Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Ondrej Zary <linux@zary.sk>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>