for the normal and extended leafs.
(The 'normal' one might be luring in the global cpulevel.)
Read the 'extended feature' from cpuid.80000001.%ecx/edx into
ci_feat_val[3/2] just after saving cpuid.1.%ecx/dx in ci_feat_val[1/0]
instead of doing it separately for amd k678 and via c3 processors
in their probe functions and repeating it for all cpus a few instructions
later when x86_cpu_topology() is called.
x86_cpu_topology() is only called from cpu_probe() and really doesn't
deserve its own source file. Chasing the setup code is bad enough anyway.
fc194a52bb