Platform/ARM/N1Sdp: Enable N1SDP platform specific configurations

The patch
  - adds GUIDs for Coresight,
  - RAM Disk device registration and support.

Change-Id: Ic6adb6400a114c1bbbba08008a8c1e187deb2e4e
Signed-off-by: Deepak Pandey <Deepak.Pandey@arm.com>
Signed-off-by: Khasim Syed Mohammed <khasim.mohammed@arm.com>