coreinfo: Move screen dimensions to header

The screen dimensions need to be known in other files.

Change-Id: Idf6f02e4cadbece78096ccd464296ecec405574d
Signed-off-by: Yasha Cherikovsky <yasha.che3@gmail.com>
Reviewed-on: http://review.coreboot.org/12439
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>
2 files changed