Fixed sysfs interface multiple gpio read/write routines
Fixed sysfs interface multiple gpio read/write routines

stefan-andritoiu/mraa-gpio-chardev,stefan-andritoiu/mraa-gpio-chardev,stefan-andritoiu/mraa-gpio-chardev,stefan-andritoiu/mraa-gpio-chardev,stefan-andritoiu/mraa-gpio-chardev