staging: unisys: visorchannel.c fix spacing around cast

Clean up the following checkpatch.pl --strict checks:

CHECK: No space is necessary after a cast
+       buf = (u8 *) __get_free_page(GFP_KERNEL);

CHECK: No space is necessary after a cast
+       free_page((unsigned long) buf);

CHECK: spaces preferred around that '+' (ctx:VxE)
+                           SIG_QUEUE_OFFSET(&channel->chan_hdr, queue)+
\
                                                                       ^

Signed-off-by: David Kershner <david.kershner@unisys.com>
Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/unisys/visorbus/visorchannel.c

@@ -279,7 +279,7 @@ visorchannel_clear(struct visorchannel *channel, ulong offset, u8 ch,
 	int written = 0;
 	u8 *buf;
 
-	buf = (u8 *) __get_free_page(GFP_KERNEL);
+	buf = (u8 *)__get_free_page(GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;
 
@@ -301,7 +301,7 @@ visorchannel_clear(struct visorchannel *channel, ulong offset, u8 ch,
 	err = 0;
 
 cleanup:
-	free_page((unsigned long) buf);
+	free_page((unsigned long)buf);
 	return err;
 }
 EXPORT_SYMBOL_GPL(visorchannel_clear);
@@ -332,7 +332,7 @@ EXPORT_SYMBOL_GPL(visorchannel_get_header);
  */
 #define SIG_WRITE_FIELD(channel, queue, sig_hdr, FIELD)			 \
 	(visorchannel_write(channel,					 \
-			    SIG_QUEUE_OFFSET(&channel->chan_hdr, queue)+ \
+			    SIG_QUEUE_OFFSET(&channel->chan_hdr, queue) +\
 			    offsetof(struct signal_queue_header, FIELD), \
 			    &((sig_hdr)->FIELD),			 \
 			    sizeof((sig_hdr)->FIELD)) >= 0)