gma500: Add the core DRM files and headers

Not really a nice way to split this up further for submission. This
provides all the DRM interfacing logic, the headers and relevant glue.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --cc drivers/gpu/drm/gma500/psb_drm.h
Simple merge

diff --cc drivers/gpu/drm/gma500/psb_drv.c
Simple merge

diff --cc drivers/gpu/drm/gma500/psb_drv.h
Simple merge

diff --cc drivers/gpu/drm/gma500/psb_irq.c
Simple merge

diff --cc drivers/gpu/drm/gma500/psb_irq.h
Simple merge

diff --cc drivers/gpu/drm/gma500/psb_reg.h
Simple merge