DSPBRIDGE: switch to pid_task for resource cleanup

Switching find_task_by_vpid call to pid_task, according to
clean ups in pid module.

Reference:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=17f98dcf6010a1cfd25d179fd0ce77d3dc2685c3Signed-off-by: Omar Ramirez Luna <omar.ramirez@ti.com>

drivers/dsp/bridge/rmgr/drv_interface.c

@@ -575,6 +575,7 @@ static int bridge_open(struct inode *ip, struct file *filp)
 	struct PROCESS_CONTEXT    *pCtxtclosed = NULL;
 	struct PROCESS_CONTEXT    *pCtxttraverse = NULL;
 	struct task_struct *tsk = NULL;
+	struct pid *pnr = NULL;
 	GT_0trace(driverTrace, GT_ENTER, "-> driver_open\n");
 	dsp_status = CFG_GetObject((u32 *)&hDrvObject, REG_DRV_OBJECT);
 
@@ -585,7 +586,8 @@ static int bridge_open(struct inode *ip, struct file *filp)
 
 	DRV_GetProcCtxtList(&pCtxtclosed, (struct DRV_OBJECT *)hDrvObject);
 	while (pCtxtclosed != NULL) {
-		tsk = find_task_by_vpid(pCtxtclosed->pid);
+		pnr = find_get_pid(pCtxtclosed->pid);
+		tsk = pid_task(pnr, PIDTYPE_PID);
 		next_node = pCtxtclosed->next;
 
 		if ((tsk == NULL) || (tsk->exit_state == EXIT_ZOMBIE)) {