Add QSPI controller support for the QCS615 (Talos) platform and improve
interconnect bandwidth management for QSPI controllers across multiple
Qualcomm SoCs.

The series consists of:

1. Add QCS615 compatible string to device tree bindings.
2. Add qspi-memory interconnect path support to the driver for proper DMA
   bandwidth allocation.
3. Add QSPI support to QCS615 platform including OPP table, pinmux, and
   controller node.
4. Enable QSPI controller and SPI-NOR flash on QCS615-RIDE board.
5. Add QSPI memory interconnect paths to existing SC7180 and Kodiak
   platforms.

The key improvement in this series is adding the qspi-memory interconnect
path. Previously, the QSPI driver only managed the CPU-to-QSPI
configuration path. Add support for the QSPI-to-memory path, which is
essential for proper bandwidth allocation during DMA operations when the
QSPI controller transfers data to/from system memory.

Set the memory path bandwidth equal to the transfer speed, matching the
existing pattern used for the CPU path. Enable and disable both paths
properly during runtime PM transitions to ensure efficient power
management.

Apply this change to existing platforms (SC7180/Kodiak) as well as the
newly added QCS615 platform to ensure consistent interconnect handling
across all QSPI-enabled SoCs.

Testing:
- Verified QSPI functionality on QCS615-RIDE with SPI-NOR flash
- Confirmed proper interconnect bandwidth voting during transfers
- Validated runtime PM transitions with both interconnect paths 

Signed-off-by: Viken Dadhaniya <viken.dadhaniya@oss.qualcomm.com>
---
Viken Dadhaniya (6):
      spi: dt-bindings: qcom-qspi: Add QCS615 compatible
      spi: spi-qcom-qspi: Add interconnect support for memory path
      arm64: dts: qcom: talos: Add QSPI support
      arm64: dts: qcom: qcs615-ride: enable QSPI and NOR flash
      arm64: dts: qcom: kodiak: Add QSPI memory interconnect path
      arm64: dts: qcom: sc7180: Add QSPI memory interconnect path

 .../bindings/spi/qcom,spi-qcom-qspi.yaml           |  1 +
 arch/arm64/boot/dts/qcom/kodiak.dtsi               |  7 +-
 arch/arm64/boot/dts/qcom/qcs615-ride.dts           | 12 ++++
 arch/arm64/boot/dts/qcom/sc7180.dtsi               |  7 +-
 arch/arm64/boot/dts/qcom/talos.dtsi                | 80 ++++++++++++++++++++++
 drivers/spi/spi-qcom-qspi.c                        | 36 +++++++++-
 6 files changed, 134 insertions(+), 9 deletions(-)
---
base-commit: c369299895a591d96745d6492d4888259b004a9e
change-id: 20260324-spi-nor-09c6d9e0de05

Best regards,
--  
Viken Dadhaniya <viken.dadhaniya@oss.qualcomm.com>