Merge pull request #1 from guhl/hybris-10.1

Add mount points for Vision
Merge pull request #2 from guhl/hybris-10.1

Add vision to devices that remove /block from the device name
Added check in write to ensure file exists and is writable

Change-Id: I351b9f4c7392b1e924075cd450b1f6ba77db4053
[ace] fixup boot and debug mode

Enable rndis device, but only if file exists
replaced usleep with sleep as it did no exist
Checked boot with lsusb/iSerial, init_enter_debug and init-debug
[vision] remove unnecessary mount points

Change-Id: I4d876ea5e291145b91c42ad18212d73078bea923