usb: dwc2: host: add disconnect interrupt to host only interrupts

GINTSTS.DisconnInt is host only interrupt and should be disable after
dwc2_disable_host_interrupts is called.
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/dwc2/core.c

@@ -857,7 +857,8 @@ void dwc2_enable_host_interrupts(struct dwc2_hsotg *hsotg)
 
 	/* Enable host mode interrupts without disturbing common interrupts */
 	intmsk = dwc2_readl(hsotg->regs + GINTMSK);
-	intmsk |= GINTSTS_DISCONNINT | GINTSTS_PRTINT | GINTSTS_HCHINT;
+	intmsk |= GINTSTS_DISCONNINT | GINTSTS_PRTINT | GINTSTS_HCHINT |
+			GINTSTS_DISCONNINT;
 	dwc2_writel(intmsk, hsotg->regs + GINTMSK);
 }
 
@@ -872,7 +873,7 @@ void dwc2_disable_host_interrupts(struct dwc2_hsotg *hsotg)
 
 	/* Disable host mode interrupts without disturbing common interrupts */
 	intmsk &= ~(GINTSTS_SOF | GINTSTS_PRTINT | GINTSTS_HCHINT |
-		    GINTSTS_PTXFEMP | GINTSTS_NPTXFEMP);
+		    GINTSTS_PTXFEMP | GINTSTS_NPTXFEMP | GINTSTS_DISCONNINT);
 	dwc2_writel(intmsk, hsotg->regs + GINTMSK);
 }