PCI: mediatek: Add support for Airoha AN7583 SoC

PCI: mediatek: Add support for Airoha AN7583 SoC

Add support for the second PCIe Root Complex present on Airoha AN7583
SoC.

This is based on the Mediatek Gen1/2 PCIe driver and similar to Gen3
also require workaround for the reset signals.

Introduce a new quirk to skip having to reset signals and also introduce
some additional logic to configure the PBUS registers required for Airoha
SoC.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://patch.msgid.link/20251020111121.31779-6-ansuelsmth@gmail.com