arm64: dts: qcom: qcs8300-ride: enable WLAN on qcs8300-ride

arm64: dts: qcom: qcs8300-ride: enable WLAN on qcs8300-ride

Enable WLAN on qcs8300-ride by adding a node for the PMU module
of the WCN6855 and assigning its LDO power outputs to the existing
WiFi module.

On the qcs8300-ride platform, the corresponding firmware and BDF
are QCA6698AQ instead of WCN6855, which have been added in the
20250211 release.

Signed-off-by: Wei Zhang <wei.zhang@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260225071459.1600394-1-wei.zhang@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>