arm64: dts: qcom: sm8550-qrd: add the Wifi node

arm64: dts: qcom: sm8550-qrd: add the Wifi node

Describe the ath12k WLAN on-board the WCN7850 module present on the
board.

[Neil: authored the initial version of the change]

Co-developed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Tested-by: Amit Pundir <amit.pundir@linaro.org>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240605122729.24283-2-brgl@bgdev.pl
Signed-off-by: Bjorn Andersson <andersson@kernel.org>