usb: dwc3: gadget: implement dwc3_gadget_get_link_state

This function will be used during hibernation to get
the current link state. It will be needed at least
for Hibernation support.

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2 files changed