Staging: media: mn88473: Match alignment with open parenthesis

Fixes the checkpatch.pl Check:
CHECK: Alignment should match open parenthesis

Increases readability by standardizing 7 argument indentations

Signed-off-by: Katie Dunne <kdunne@mail.ccsf.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>