Mainly style and grammar comments

Remove any reference to platform-device-loader. It is not open-source,
it should not be used by anyone, nobody should see it. This tool is
used by us to compensate the lack of infrastructure at CERN. Other
people should go for DeviceTree.
Signed-off-by: Federico Vaga <federico.vaga@cern.ch>
Reported-by: Erik Van Der Bij <Erik.van.der.Bij@cern.ch>