usb: dwc2: host: fix dwc2 disconnect bug

When dwc2 controller detects a disconnect interrupt,
dwc2_hcd_disconnect() should be called immediately to do clean-up
jobs and set port_connect_status_change flag to notify usb hub
driver disconnect status.
Tested-by: NVincent Palatin <vpalatin@chromium.org>
Acked-by: NJohn Youn <johnyoun@synopsys.com>
Signed-off-by: NYunzhi Li <lyz@rock-chips.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

drivers/usb/dwc2/core_intr.c

@@ -377,6 +377,9 @@ static void dwc2_handle_disconnect_intr(struct dwc2_hsotg *hsotg)
 		dwc2_is_host_mode(hsotg) ? "Host" : "Device",
 		dwc2_op_state_str(hsotg));
 
+	if (hsotg->op_state == OTG_STATE_A_HOST)
+		dwc2_hcd_disconnect(hsotg);
+
 	/* Change to L3 (OFF) state */
 	hsotg->lx_state = DWC2_L3;