gma500: Fix Cedarview support (Correct version)

And update to the actual product naming as the press release is now out.

http://newsroom.intel.com/docs/DOC-2553#pressmaterials



- Fixes the wrong ifdef check
- Fixes the missing crtc count declaration

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