cpu/intel/car/core2: Improve a few things

This changes the following:
- compute amount variable MTRR's during runtime
- Wait for all CPU's to be in Wait for SIPI state after sending init
  INIT IPI to all AP's
- compute the PHYSMASK high during runtime and preload it to the
  MTRR_PHYS_MASK msr's

Change-Id: I8d8672f8b577c2e7cef6e80978c4464a771f430c
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/26784
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
1 file changed