gma: Expect zero Audio_VID_DID on Ibex Peak

It turned out that Ibex Peak, the PCH paired with the original Ironlake
graphics in Nehalem processors, doesn't have that id.

Change-Id: I928ca8df18b67a427c587ae768b4980e62b8fe1e
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/16960
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
1 file changed
tree: e4154a8236311140a74321d9ecf8db152e91c9be
  1. common/
  2. configs/
  3. .gitignore
  4. COPYING
  5. Makefile
  6. Makefile.inc
  7. TODO