usb: dwc2: gadget: rework suspend/resume code to correctly restore gadget state

Suspend/resume code assumed that the gadget was always started and
enabled to connect to usb bus. This means that the actual state of the
gadget (started/stopped or connected/disconnected) was not correctly
preserved on suspend/resume cycle. This patch fixes this issue.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h
index 6b19755..7a70a13 100644
--- a/drivers/usb/dwc2/core.h
+++ b/drivers/usb/dwc2/core.h
@@ -688,8 +688,9 @@
 	u8 ctrl_buff[8];
 
 	struct usb_gadget gadget;
+	unsigned int enabled:1;
 	unsigned int connected:1;
-	unsigned int setup;
+	unsigned int setup:1;
 	unsigned long last_rst;
 	struct s3c_hsotg_ep *eps;
 #endif /* CONFIG_USB_DWC2_PERIPHERAL || CONFIG_USB_DWC2_DUAL_ROLE */