[PATCH 2/3] staging: dwc2: when dma is disabled, clear hcd-self.uses_dma

When dma is disabled inside dwc2 (because the hardware does not support it, or the code was changed to disable it for testing), let the usb core know about this by clearing hcd-self.uses_dma. By default, the usb core assumes that dma is used when a dma_mask is set, but this might not always match

[PATCH 2/3] staging: dwc2: when dma is disabled, clear hcd-self.uses_dma

When dma is disabled inside dwc2 (because the hardware does not support it, or the code was changed to disable it for testing), let the usb core know about this by clearing hcd-self.uses_dma. By default, the usb core assumes that dma is used when a dma_mask is set, but this might not always match