Staging: dream: camera: sk5k3e2fx: fix code style issues

This fixes some code style issues about assignments in if conditions.

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