staging: panel: replace init_timer by setup_timer

This patch replaces init_timer and the 2 step initialization of function
and data by setup_timer to make the code more concise.

The issue was discovered using the following coccinelle script:

@@
expression ds, e1, e2;
@@

-init_timer (&ds);
+setup_timer (&ds, e1, e2);
...
(
-ds.function = e1;
...
-ds.data = e2;
|
-ds.data = e2;
...
-ds.function = e1;
)

Signed-off-by: Aya Mahfouz <mahfouz.saif.elyazal@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/panel/panel.c

@@ -2010,10 +2010,8 @@ static void init_scan_timer(void)
 	if (scan_timer.function != NULL)
 		return;		/* already started */
 
-	init_timer(&scan_timer);
+	setup_timer(&scan_timer, (void *)&panel_scan_timer, 0);
 	scan_timer.expires = jiffies + INPUT_POLL_TIME;
-	scan_timer.data = 0;
-	scan_timer.function = (void *)&panel_scan_timer;
 	add_timer(&scan_timer);
 }