x86, amd: Move BSP code to cpu_dev helper

Move code which is run once on the BSP during boot into the cpu_dev
helper.

[ hpa: removed bogus cpu_has -> static_cpu_has conversion ]

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Link: http://lkml.kernel.org/r/20110805180409.GC26217@aftab


Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>