Unify CAR so the same compiled code does the right thing on both

K8 and Fam10+ CPUs.

What this patch does:
1. Enable SSE (to get some more registers to play with)
2. Determine CPUID, and stash it in an XMM register, and reference
   value for comparison in another XMM register (mangled somewhat to
   simplify inequality comparisons)
3. Add a macro jmp_if_k8, which jumps if the CPU is K8
   (using an SSE compare)
4. Replace #if CAR_FAM10 sections with runtime checks using jmp_if_k8.
   This is pretty mechanical work. The macro uses local labels
   (1: and 2:) to prevent namespace issues
5. At one time, CPU_ADDR_BITS is used to fill a register. This is
   replaced with hardcoded values for both cases, and switched
   appropriately.
6. Disable SSE

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3951 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

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