dt-bindings: usb: qcom,dwc3: Add QCS615 to USB DWC3 bindings

dt-bindings: usb: qcom,dwc3: Add QCS615 to USB DWC3 bindings

Update dt-bindings to add primary controller of QCS615 to USB
DWC3 controller list.

Although this controller has a QUSB2 Phy, it belongs to a
generation of SoCs like SDM670/SDM845/SM6350 where DP/DM is
used for wakeup instead of qusb2_phy interrupt.

Signed-off-by: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241224084621.4139021-2-krishna.kurapati@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>