x86: include mach_apic.h in smpboot_64.c and smpboot.c

After the inclusion, a lot of files needs fixing for conflicts,
some of them in the headers themselves, to accomodate for both
i386 and x86_64 versions.

[ mingo@elte.hu: build fix ]

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/smpboot_64.c b/arch/x86/kernel/smpboot_64.c
index 7d1b4cb..8a59fa8 100644
--- a/arch/x86/kernel/smpboot_64.c
+++ b/arch/x86/kernel/smpboot_64.c
@@ -61,6 +61,7 @@
 #include <asm/numa.h>
 
 #include <mach_wakecpu.h>
+#include <mach_apic.h>
 #include <smpboot_hooks.h>
 
 /* Set when the idlers are all forked */