errata of 1000

#
# ERRATA of 1000 ( git reset --hard bd91aa760945cf6229e4ce5e0acc5ed7cd60b398 ) : after doing the <1000 reverts, also add
#     #define SPEEDSTEP_APIC_MAGIC 0xACAC
# to the beginning of ./coreboot/src/cpu/x86/lapic/lapic_cpu_init.c
# to avoid doing the
#     git revert f9679c42876bab145f1b7a2a2e6e1eb5331fa418 #   500 # nb/intel/gm45: Remove apic 0 from devicetree
#     git revert 31ba9356b877d670e683953f8b8962a7e6206cc3 #   499 # nb/intel/i945: Remove apic 0 from devicetree
#     git revert 803029685f96bccac13359fc616d1577508ba764 #   498 # nb/intel/x4x: Remove apic 0 from devicetree
#     git revert 98c92570d9bb363740ae1b2cbbefc3c0f2404cb4 #   497 # cpu/intel/speedstep: Have nb and sb code provide c5/c6/slfm
#