accel: Move Xen accelerator code under accel/xen/

This code is not related to hardware emulation.
Move it under accel/ with the other hypervisors.

Reviewed-by: Paul Durrant <paul@xen.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200508100222.7112-1-philmd@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/i386/pc.c

@@ -57,6 +57,7 @@
 #include "sysemu/tcg.h"
 #include "sysemu/numa.h"
 #include "sysemu/kvm.h"
+#include "sysemu/xen.h"
 #include "sysemu/qtest.h"
 #include "sysemu/reset.h"
 #include "sysemu/runstate.h"

hw/i386/pc_piix.c

@@ -53,6 +53,7 @@
 #include "cpu.h"
 #include "qapi/error.h"
 #include "qemu/error-report.h"
+#include "sysemu/xen.h"
 #ifdef CONFIG_XEN
 #include <xen/hvm/hvm_info_table.h>
 #include "hw/xen/xen_pt.h"

hw/i386/pc_q35.c

@@ -36,6 +36,7 @@
 #include "hw/rtc/mc146818rtc.h"
 #include "hw/xen/xen.h"
 #include "sysemu/kvm.h"
+#include "sysemu/xen.h"
 #include "hw/kvm/clock.h"
 #include "hw/pci-host/q35.h"
 #include "hw/qdev-properties.h"

hw/i386/xen/xen-hvm.c

@@ -28,6 +28,7 @@
 #include "qemu/range.h"
 #include "sysemu/runstate.h"
 #include "sysemu/sysemu.h"
+#include "sysemu/xen.h"
 #include "sysemu/xen-mapcache.h"
 #include "trace.h"
 #include "exec/address-spaces.h"

hw/i386/xen/xen_platform.c

@@ -33,6 +33,7 @@
 #include "hw/xen/xen-legacy-backend.h"
 #include "trace.h"
 #include "exec/address-spaces.h"
+#include "sysemu/xen.h"
 #include "sysemu/block-backend.h"
 #include "qemu/error-report.h"
 #include "qemu/module.h"