Merge changes I7caef189,I6bf9510c,Ic624a9d6 into msm-4.14

* changes:
  USB: gsi: Use dma_get_sgtable() to update USB TRB ring and data buffer
  usb: f_gsi: Use gadget->dev.parent->parent instead of gadget->dev.parent
  dwc3-msm: Map IPA channel doorbell address with USB device