usb: gadget: at91_udc: Fix comments typo

Delete the rebundant word "also" in comments.

Signed-off-by: Shaomin Deng <dengshaomin@cdjrlc.com>
Link: https://lore.kernel.org/r/20220827153313.5754-1-dengshaomin@cdjrlc.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>