ioemu: fix warnings in pass-through.h and pass-through.c

This patch backports following changes of ioemu-remote to ioemu.
It fixs warning in tools/ioemu/hw/pass-through.h and
tools/ioemu/hw/pass-through.c.

commit 30f00a0284a5ee356de6f6095e52173f2234145b
Author: Ian Jackson <ian.jackson@eu.citrix.com>
Date:   Fri Jul 18 16:02:23 2008 +0100

    hw/pass-through.c: pt_unregister_regions returns void

    It only ever falls off the end, and its return value is not used
    by its one caller.

    Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>


commit 439836900dad41f66234d2a14981aa2a90d4d346
Author: Ian Jackson <ian.jackson@eu.citrix.com>
Date:   Tue Jul 22 11:55:18 2008 +0100

    Add missing cast for printf of maddr


commit cf5b00e6b714eb5f900d55471d85956b09cb8fd9
Author: Ian Jackson <ian.jackson@eu.citrix.com>
Date:   Thu Jul 24 13:57:10 2008 +0100

    pass-through.h: Sprinkle some #ifdefs to cope with pciutils-dev
    versions

    Some versions of pciutils-dev contain #defines which others are
    lacking.
    To avoid spurious compiler warnings we add some #ifdefs.  *sigh*

    Signed-off-by: Yuji Shimada <shimada-yxb@necst.nec.co.jp>

Signed-off-by: Yuji Shimada <shimada-yxb@necst.nec.co.jp>

tools/ioemu/hw/pass-through.c

@@ -821,7 +821,7 @@ void pt_iomem_map(PCIDevice *d, int i, uint32_t e_phys, uint32_t e_size,
     assigned_device->bases[i].e_size= e_size;
 
     PT_LOG("e_phys=%08x maddr=%lx type=%d len=%d index=%d first_map=%d\n",
-        e_phys, assigned_device->bases[i].access.maddr, 
+        e_phys, (unsigned long)assigned_device->bases[i].access.maddr, 
         type, e_size, i, first_map);
 
     if ( e_size == 0 )
@@ -1389,7 +1389,7 @@ static int pt_register_regions(struct pt_dev *assigned_device)
     return 0;
 }
 
-static int pt_unregister_regions(struct pt_dev *assigned_device)
+static void pt_unregister_regions(struct pt_dev *assigned_device)
 {
     int i, type, ret;
     uint32_t e_size;

tools/ioemu/hw/pass-through.h

@@ -47,12 +47,20 @@
 /* because the current version of libpci (2.2.0) doesn't define these ID,
  * so we define Capability ID here.
  */
+#ifndef PCI_CAP_ID_HOTPLUG
 /* SHPC Capability List Item reg group */
 #define PCI_CAP_ID_HOTPLUG      0x0C
+#endif
+
+#ifndef PCI_CAP_ID_SSVID
 /* Subsystem ID and Subsystem Vendor ID Capability List Item reg group */
 #define PCI_CAP_ID_SSVID        0x0D
+#endif
+
+#ifndef PCI_MSI_FLAGS_MASK_BIT
 /* interrupt masking & reporting supported */
 #define PCI_MSI_FLAGS_MASK_BIT  0x0100
+#endif
 
 #define PT_INVALID_REG          0xFFFFFFFF      /* invalid register value */
 #define PT_BAR_ALLF             0xFFFFFFFF      /* BAR ALLF value */