[ARM] Kirkwood: initialize PCIE1 for QNAP TS-419P+

Initialize PCIE1 on the 6282-based QNAP TS-419P+ since it has a Marvell 9125
SATA chip on each PCI bus.

Signed-off-by: Zintis Pētersons <zintis.petersons@abcsolutions.lv>
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>