dt-bindings: PCI: qcom,pcie-sm8550: Add Kaanapali compatible

dt-bindings: PCI: qcom,pcie-sm8550: Add Kaanapali compatible

On the Qualcomm Kaanapali platform the PCIe host is compatible with the
DWC controller present on the SM8550 platform.

Signed-off-by: Jingyi Wang <jingyi.wang@oss.qualcomm.com>
Signed-off-by: Qiang Yu <qiang.yu@oss.qualcomm.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20251015-kaanapali-pcie-upstream-v2-1-84fa7ea638a1@oss.qualcomm.com