staging: r8188eu: Fix block comment format

Adhere to Linux coding style. Fix the below checkpatch warning:
 WARNING: Block comments should align the * on each line

Signed-off-by: Soumya Negi <soumya.negi97@gmail.com>
Link: https://lore.kernel.org/r/20220513075107.23285-1-soumya.negi97@gmail.com


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