arm64: dts: qcom: x1e80100-vivobook-s15: fix up PCIe6a pinctrl node

The PCIe6a pinctrl node appears to have been copied from the sc8280xp
CRD dts (via the x1e80100 CRD dts), which has the NVMe on pcie2a.

Fix up the node name to match the x1e80100 use and label.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240722095459.27437-7-johan+linaro@kernel.org


Signed-off-by: Bjorn Andersson <andersson@kernel.org>