dt-bindings: net: wireless: add ath11k pcie bindings

Add devicetree bindings for Qualcomm ath11k PCIe devices such as WCN6855
for which the calibration data variant may need to be described.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://lore.kernel.org/r/20230321094011.9759-2-johan+linaro@kernel.org