usb: dwc3: Fix typos in gadget.c

Fixes the following two typos:
   1. reinitate -> reinitiate
   2. revison -> revision

Signed-off-by: Kushagra Verma <kushagra765@outlook.com>
Link: https://lore.kernel.org/r/HK0PR01MB280110FAB74B4B2ACE32EA5FF8479@HK0PR01MB2801.apcprd01.prod.exchangelabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>