Staging: dream: pmem: fix some code style issues

This fixes some code style issues like prohibited spaces after that open
parenthesis '(' and before that close parenthesis ')', and lines over 80
characters.

Signed-off-by: Chihau Chau <chihau@gmail.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>