arm64: dts: qcom: ipq9574: Add MHI to pcie nodes

arm64: dts: qcom: ipq9574: Add MHI to pcie nodes

Append the MHI range to the pcie nodes. Append the MHI register range to
IPQ9574. This is an optional range used by the dwc controller driver to
print debug stats via the debugfs file 'link_transition_count'.

Convert reg-names to vertical list.

Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250317100029.881286-3-quic_varada@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>