arm: dts: qcom: sdx55: Add interconnect path

Add pcie-mem interconnect path to sdx55 target.

Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/1686752666-13426-3-git-send-email-quic_krichai@quicinc.com