Staging: vt6656: Clean up spaces around parenthesized expressions

Clean up a number of places where unneeded spaces are used around
expressions.

Signed-off-by: Philip Worrall <philip.worrall@googlemail.com>
Reviewed-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>