Fixed tyop on README file

Change-Id: I219b39c647443d50f37fab8c6ffe0010f6a1d3be
[intn] Changed device driver class name as a workaround for loadin a new
       device driver in kernel space in an existing class in sysfs

Change-Id: I749154fd2d9469f160964fbaf0ca1293dfd4435a