northbridge/haswell: clean up native graphics init code

Clean up NGI code now that libgfxinit has replaced old C code:

- replace #if preprocessor guards with if (IS_ENABLED(...))
- don't guard variable declarations
- remove code that would only be executed for old NGI / isn't
  used by libgfxinit

Test: boot google/wolf with VBIOS, NGI, and UEFI/GOP video init,
observe payload and pre-OS graphics display functional.

Change-Id: I96e74f49ea70e09cbac6f8af561de3e18fa7d260
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/19327
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com>

0 files changed, 0 insertions, 0 deletions