usb: dwc2: gadget: don't modify pullup status during reset

Pullup doesn't need to be enabled during usb reset since it is
already enabled. This leads to shorter chirp-k duration if done
during usb reset.
Tested-by: NRobert Baldyga <r.baldyga@samsung.com>
Acked-by: NJohn Youn <johnyoun@synopsys.com>
Signed-off-by: NGregory Herrero <gregory.herrero@intel.com>
Signed-off-by: NFelipe Balbi <balbi@ti.com>

drivers/usb/dwc2/gadget.c

@@ -2492,7 +2492,6 @@ static irqreturn_t s3c_hsotg_irq(int irq, void *pw)
 							  -ECONNRESET);
 
 				s3c_hsotg_core_init_disconnected(hsotg, true);
-				s3c_hsotg_core_connect(hsotg);
 			}
 		}
 	}