hw/pci-host/q35: Remove unused includes

Only q35.c requires declarations from "hw/i386/pc.h", move it there.
Remove all the includes not used by "q35.h".

Acked-by: John Snow <jsnow@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200228114649.12818-18-philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

hw/pci-host/q35.c

@@ -29,6 +29,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "hw/i386/pc.h"
 #include "hw/pci-host/q35.h"
 #include "hw/qdev-properties.h"
 #include "migration/vmstate.h"

include/hw/pci-host/q35.h

@@ -22,16 +22,9 @@
 #ifndef HW_Q35_H
 #define HW_Q35_H
 
-#include "hw/isa/isa.h"
-#include "hw/sysbus.h"
-#include "hw/i386/pc.h"
-#include "hw/isa/apm.h"
 #include "hw/pci/pci.h"
 #include "hw/pci/pcie_host.h"
-#include "hw/acpi/acpi.h"
-#include "hw/acpi/ich9.h"
 #include "hw/pci-host/pam.h"
-#include "hw/i386/intel_iommu.h"
 #include "qemu/units.h"
 #include "qemu/range.h"