修复/dev/power的返回值

power.c

@@ -278,14 +278,14 @@ static void delay_work_func(struct work_struct *work)
     if(ac_flag >= 16 || sysfs_power_off_flag == 1)
 #endif
     {
-        chardev_dev->status = 'p';
+        chardev_dev->status = 'P';
         chardev_dev->data_len = 1;
         wake_up_interruptible(&chardev_dev->read_queue);
     }
     
     if(rst_flag >= 3)
     {
-        chardev_dev->status = 'r';
+        chardev_dev->status = 'R';
         chardev_dev->data_len = 1;
         wake_up_interruptible(&chardev_dev->read_queue);
     }