Clean up header guards that don't match their file name

Header guard symbols should match their file name to make guard
collisions less likely.  Offenders found with
scripts/clean-header-guards.pl -vn.

Cleaned up with scripts/clean-header-guards.pl, followed by some
renaming of new guard symbols picked by the script to better ones.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>

include/hw/pci-host/apb.h

@@ -1,5 +1,5 @@
-#ifndef APB_PCI_H
-#define APB_PCI_H
+#ifndef PCI_HOST_APB_H
+#define PCI_HOST_APB_H
 
 #include "qemu-common.h"
 

include/hw/pci-host/ppce500.h

@@ -1,5 +1,5 @@
-#ifndef PPCE500_PCI_H
-#define PPCE500_PCI_H
+#ifndef PCI_HOST_PPCE500_H
+#define PCI_HOST_PPCE500_H
 
 static inline int ppce500_pci_map_irq_slot(int devno, int irq_num)
 {

include/hw/pci-host/spapr.h

@@ -17,8 +17,8 @@
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */
 
-#if !defined(__HW_SPAPR_PCI_H__)
-#define __HW_SPAPR_PCI_H__
+#ifndef PCI_HOST_SPAPR_H
+#define PCI_HOST_SPAPR_H
 
 #include "hw/ppc/spapr.h"
 #include "hw/pci/pci.h"
@@ -153,4 +153,4 @@ static inline void spapr_phb_vfio_reset(DeviceState *qdev)
 
 void spapr_phb_dma_reset(sPAPRPHBState *sphb);
 
-#endif /* __HW_SPAPR_PCI_H__ */
+#endif /* PCI_HOST_SPAPR_H */