usb: gadget: Kconfig: fix typo for 'different'

Signed-off-by: Fabio Baltieri <fabio.baltieri@gmail.com>
Reviewed-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 1623b52..c14a397 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -698,7 +698,7 @@
 	help
 	  This driver implements USB CDC NCM subclass standard. NCM is
 	  an advanced protocol for Ethernet encapsulation, allows grouping
-	  of several ethernet frames into one USB transfer and diffferent
+	  of several ethernet frames into one USB transfer and different
 	  alignment possibilities.
 
 	  Say "y" to link the driver statically, or "m" to build a