mainboard/lenovo: [1/2] fork X230 to T530

Step 1: copy all files unmodified from Lenovo X230.  This makes it much
easier later to see how the two boards actually and deliberately differ
when porting bugfixes from one to the other.

Change-Id: I3151c7848440ea6c240b959379a8eb369d35f3de
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/5390
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Tested-by: build bot (Jenkins)
mainboard/lenovo: [2/2] implement initial T530 support

Step 2: change the Lenovo X230 code to adapt it to the new board's
hardware with the great guidance from Vladimir (phcoder) to find the
correct GPIO's.

The machine has:
 - Chipset: Intel QM77
 - GPU's: Intel Integrated HD Graphics
        : Discrete NVIDIA NVS 5400M (1 GB VRAM) with Optimus Technology

Change-Id: Iee12c3edc22df4a7935b7fb7ff4a320c21c4239b
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/5391
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>