USB: Fix misspelled "USBNET_MII" kernel config option.

Fix the misspelling of "USBNET_MII" to "USB_USBNET_MII".

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/net/Kconfig b/drivers/usb/net/Kconfig
index 7ae4ed0..5b7fed7 100644
--- a/drivers/usb/net/Kconfig
+++ b/drivers/usb/net/Kconfig
@@ -99,7 +99,7 @@
 
 config USB_USBNET
 	tristate "Multi-purpose USB Networking Framework"
-	select MII if USBNET_MII != n
+	select MII if USB_USBNET_MII != n
 	---help---
 	  This driver supports several kinds of network links over USB,
 	  with "minidrivers" built around a common network driver core