The 7712 SoC adds a software init reset device for the PCIe HW.

If found in the DT node, use it.

Link: https://lore.kernel.org/linux-pci/20240815225731.40276-7-james.quinlan@broadcom.comSigned-off-by: Jim Quinlan <james.quinlan@broadcom.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>