intel/sandybridge: Add VGA pci device ID 0x0162

for Ivy Bridge.  Tested on Gigabyte ga-b75m-d3h.

Change-Id: I7a1b1e8bac38789321960ebbe8c97d68a5aebfe2
Signed-off-by: Damien Zammit <damien@zamaudio.com>
Reviewed-on: http://review.coreboot.org/7173
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>