x86: unify smp_send_stop

function definition is moved to common header.
x86_64 version is now called native_smp_send_stop

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --cc arch/x86/kernel/smp_64.c
Simple merge

diff --cc include/asm-x86/smp.h
Simple merge

diff --cc include/asm-x86/smp_32.h
Simple merge