explicitly include qom/cpu.h

exec/cpu-all.h includes qom/cpu.h.  Explicit inclusion
will keep things working when cpu.h will not be included
indirectly almost everywhere (either directly or through
qemu-common.h).
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

hw/acpi/piix4.c

@@ -39,6 +39,7 @@
 #include "hw/acpi/memory_hotplug.h"
 #include "hw/acpi/acpi_dev_interface.h"
 #include "hw/xen/xen.h"
+#include "qom/cpu.h"
 
 //#define DEBUG
 

hw/arm/collie.c

@@ -18,6 +18,7 @@
 #include "hw/block/flash.h"
 #include "sysemu/block-backend.h"
 #include "exec/address-spaces.h"
+#include "qom/cpu.h"
 
 static struct arm_boot_info collie_binfo = {
     .loader_start = SA_SDCS0,

hw/cpu/a9mpcore.c

@@ -11,6 +11,7 @@
 #include "qemu/osdep.h"
 #include "qapi/error.h"
 #include "hw/cpu/a9mpcore.h"
+#include "qom/cpu.h"
 
 static void a9mp_priv_set_irq(void *opaque, int irq, int level)
 {

hw/isa/lpc_ich9.c

@@ -47,6 +47,7 @@
 #include "hw/pci/pci_bus.h"
 #include "exec/address-spaces.h"
 #include "sysemu/sysemu.h"
+#include "qom/cpu.h"
 
 static int ich9_lpc_sci_irq(ICH9LPCState *lpc);
 

include/hw/ppc/openpic.h

@@ -3,6 +3,7 @@
 
 #include "qemu-common.h"
 #include "hw/qdev.h"
+#include "qom/cpu.h"
 
 #define TYPE_OPENPIC "openpic"