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/apic.c b/arch/x86/kernel/apic.c
index 41a0ba3..81efe86 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -49,7 +49,7 @@
 #include <asm/i8259.h>
 #include <asm/smp.h>
 
-#include <mach_ipi.h>
+#include <asm/genapic.h>
 
 /*
  * Sanity check