flash/nor/driver.h: typo fix

Change-Id: Ie260f3c38b648e66958c014658bb6860171a7cc9
Signed-off-by: Christopher Kilgour <techie@whiterocker.com>
Reviewed-on: http://openocd.zylin.com/653
Tested-by: jenkins
Reviewed-by: Bill Traynor <wmat@alphatroop.com>
Reviewed-by: Xiaofan <xiaofanc@gmail.com>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

src/flash/nor/driver.h

@@ -200,7 +200,7 @@ struct flash_driver {
 	/**
 	 * A more gentle flavor of filash_driver_s::probe, performing
 	 * setup with less noise.  Generally, driver routines should test
-	 * to seee if the bank has already been probed; if it has, the
+	 * to see if the bank has already been probed; if it has, the
 	 * driver probably should not perform its probe a second time.
 	 *
 	 * This callback is often called from the inside of other