wifi: rtw89: pci: disable PCI completion timeout control

Realtek's chips follow suggestion of PCIe spec to design the max timeout of
PCI completion, but some PCIe host reply too slow to meet it and lead PCI
AER. Disable PCI completion timeout function via PCI configuration to
avoid the AER.

Signed-off-by: Chin-Yen Lee <timlee@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20241225122804.10214-1-pkshih@realtek.com