usb: gadget: s3c-hsudc: clean up comments

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Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20220418133619.2852678-1-trix@redhat.com


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