x86, smp: remove mach_ipi.h

Move mach_ipi.h definitions into genapic.h.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 38dace2..32e8f0a 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -24,7 +24,7 @@
 # include <asm/iommu.h>
 #endif
 
-#include <mach_ipi.h>
+#include <asm/genapic.h>
 
 /*
  * Power off function, if any