usb: musb: da8xx: Fix build breakage due to typo

Commit 032ec49f5351e9cb242b1a1c367d14415043ab95 (usb: musb: drop useless
board_mode usage) introduced a typo that breaks the build.

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@gmail.com>

[ Fixed commit message ]

Cc: Mikhail Kshevetskiy <mikhail.kshevetskiy@gmail.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org
Signed-off-by: Michael Riesch <michael.riesch@omicron.at>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/musb/da8xx.c

@@ -327,7 +327,7 @@ static irqreturn_t da8xx_musb_interrupt(int irq, void *hci)
 		u8 devctl = musb_readb(mregs, MUSB_DEVCTL);
 		int err;
 
-		err = musb->int_usb & USB_INTR_VBUSERROR;
+		err = musb->int_usb & MUSB_INTR_VBUSERROR;
 		if (err) {
 			/*
 			 * The Mentor core doesn't debounce VBUS as needed