Intel cpus: apply some good programming practices in new CAR

Intel cpus: apply some good programming practices in new CAR

Delete dead CAR code and whitespace fixes.

Replace cryptic 32bit hex values with existing LAPIC definitions.

Do not assume state of direction flag before "rep" instruction.

Do not load immediate values on temporary registers when not needed.

Parameter pushed on stack was not popped (or flushed) after returning
from call. This is a sort-of memory leak if multiple call's are
implemented the same way.

Change-Id: Ibb93e889b3a0af87b89345c462e331881e78686a
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/643
Tested-by: build bot (Jenkins)
Reviewed-by: Idwer Vollering <vidwer@gmail.com>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>