usb/musb: fix repeated words in comments

 Delete the redundant word 'mode'.
 Delete the redundant word 'than'.

Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Link: https://lore.kernel.org/r/20220716134457.46535-1-yuanjilin@cdjrlc.com


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