usb: phy: ab8500-usb: fix last notifier arguments

Fix last ab->phy.notifier call to use vbus_draw as notifier argument, as
that's used in ab8500_charger to control charging current.

Also drop a related TODO comment, and the additional
ux500_musb_set_vbus(musb, 0), as with this patch it was causing an
erratic behaviour of gadget ep0 state machine.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

drivers/usb/musb/ux500.c

@@ -114,7 +114,6 @@ static int musb_otg_notifications(struct notifier_block *nb,
 		break;
 	case UX500_MUSB_VBUS:
 		dev_dbg(musb->controller, "VBUS Connect\n");
-		ux500_musb_set_vbus(musb, 0);
 		break;
 	case UX500_MUSB_NONE:
 		dev_dbg(musb->controller, "VBUS Disconnect\n");

drivers/usb/phy/phy-ab8500-usb.c

@@ -578,16 +578,12 @@ static int ab8500_usb_set_power(struct usb_phy *phy, unsigned mA)
 
 	ab->vbus_draw = mA;
 
-	if (mA)
-		atomic_notifier_call_chain(&ab->phy.notifier,
-				UX500_MUSB_ENUMERATED, ab->phy.otg->gadget);
+	atomic_notifier_call_chain(&ab->phy.notifier,
+			UX500_MUSB_VBUS, &ab->vbus_draw);
+
 	return 0;
 }
 
-/* TODO: Implement some way for charging or other drivers to read
- * ab->vbus_draw.
- */
-
 static int ab8500_usb_set_suspend(struct usb_phy *x, int suspend)
 {
 	/* TODO */