usb: hub: Fix enumration timeout

Patch b6d7852c increases timeout for enumeration, taking
worst case to be 10 sec.
get_timer() api returns timestamp in milliseconds, which is
what we are checking in the do-while() loop in usb_hub_configure()
(get_timer(start) < CONFIG_SYS_HZ * 10).
This should give us a required check for 10 seconds, and thereby
we don't need to add additional mdelay of 100 microseconds in
each cycle.

Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Reviewed-by: Vipin Kumar <vipin.kumar@st.com>

common/usb_hub.c

@@ -443,7 +443,6 @@ static int usb_hub_configure(struct usb_device *dev)
 				(portstatus & USB_PORT_STAT_CONNECTION))
 				break;
 
-			mdelay(100);
 		} while (get_timer(start) < CONFIG_SYS_HZ * 10);
 
 		if (ret < 0)