x86: remove mach_apic.h

Spread mach_apic.h definitions into genapic.h. (with some knock-on effects
on smp.h and apic.h.)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index abae819..e0744ea 100644
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -63,7 +63,7 @@
 #include <asm/uv/uv_irq.h>
 
 #include <mach_ipi.h>
-#include <mach_apic.h>
+#include <asm/genapic.h>
 
 #define __apicdebuginit(type) static type __init