arm64: dts: qcom: sc7180: Add QSPI memory interconnect path

arm64: dts: qcom: sc7180: Add QSPI memory interconnect path

Add the missing QSPI-to-memory interconnect path alongside the existing
configuration path. Without this path, the interconnect framework cannot
correctly vote for the bandwidth required by QSPI DMA data transfers.

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Viken Dadhaniya <viken.dadhaniya@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260429-spi-nor-v5-7-993016c9711e@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>