usb: dwc2: Reset DEVADDR after exiting gadget hibernation.

Initially resetting device address was done in dwc2_hsotg_irq()
interrupt handler. However, when core is hibernated USB RESET
is not handled in dwc2_hsotg_irq() handler, instead USB RESET
interrupt is handled in dwc2_handle_gpwrdn_intr() handler.

- Added reset device address to zero when core exits from gadget
  hibernation.
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Signed-off-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Link: https://lore.kernel.org/r/20210416124659.652CFA005C@mailhost.synopsys.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/dwc2/gadget.c

@@ -5305,6 +5305,10 @@ int dwc2_gadget_exit_hibernation(struct dwc2_hsotg *hsotg,
 	dwc2_writel(hsotg, dr->dcfg, DCFG);
 	dwc2_writel(hsotg, dr->dctl, DCTL);
 
+	/* On USB Reset, reset device address to zero */
+	if (reset)
+		dwc2_clear_bit(hsotg, DCFG, DCFG_DEVADDR_MASK);
+
 	/* De-assert Wakeup Logic */
 	gpwrdn = dwc2_readl(hsotg, GPWRDN);
 	gpwrdn &= ~GPWRDN_PMUACTV;