x86: make nmi_shootdown_cpus() available on !SMP and !X86_LOCAL_APIC
x86: make nmi_shootdown_cpus() available on !SMP and !X86_LOCAL_APIC

Impact: widen nmi_shootdown_cpus() availability

The X86_LOCAL_APIC #ifdef was for kdump. For !SMP, the function simply
does nothing.

Signed-off-by: Eduardo Habkost <50373d7c08ceadf576dd7dca718012445b677ce6@redhat.com>
Signed-off-by: Ingo Molnar <9dbbbf0688fedc85ad4da37637f1a64b8c718ee2@elte.hu>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs