2020-10-bpi-20200829100551

pcie: mediatek: fix for hang on mt7623

if no card is inserted in pcie-slot on bananapi r2
there is a hang on pci enum. it should be skip port0
and continue with port1 where sata-controller is connected

Fixes: 42d37450e5 ("pci: mediatek: add PCIe controller support for MT7623")
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>