More trailing whilespace removal

drivers/input/stmpe811_tsc.c

@@ -180,7 +180,7 @@ static void stmpe811_notify(FAR struct stmpe811_dev_s *priv)
        * is no longer available.
        */
 
-      sem_post(&priv->waitsem); 
+      sem_post(&priv->waitsem);
     }
 
   /* If there are threads waiting on poll() for STMPE811 data to become available,
@@ -297,7 +297,7 @@ static inline int stmpe811_waitsample(FAR struct stmpe811_dev_s *priv,
   while (stmpe811_sample(priv, sample) < 0)
     {
       /* Wait for a change in the STMPE811 state */
- 
+
       priv->nwaiters++;
       ret = sem_wait(&priv->waitsem);
       priv->nwaiters--;
@@ -1133,7 +1133,7 @@ ignored:
       (void)wd_start(priv->wdog, STMPE811_PENUP_TICKS, stmpe811_timeout,
                      1, (uint32_t)((uintptr_t)priv));
     }
-  
+
   /*  Reset and clear all data in the FIFO */
 
   stmpe811_putreg8(priv, STMPE811_FIFO_STA, FIFO_STA_FIFO_RESET);