xenstore: Use <xenstore.h>

In the next release of Xen (4.2), xs.h became deprecated.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>

configure

@@ -1381,7 +1381,7 @@ EOF
   elif (
       cat > $TMPC <<EOF
 #include <xenctrl.h>
-#include <xs.h>
+#include <xenstore.h>
 #include <stdint.h>
 #include <xen/hvm/hvm_info_table.h>
 #if !defined(HVM_MAX_VCPUS)

hw/xen_common.h

@@ -7,7 +7,11 @@
 #include <inttypes.h>
 
 #include <xenctrl.h>
-#include <xs.h>
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 420
+#  include <xs.h>
+#else
+#  include <xenstore.h>
+#endif
 #include <xen/io/xenbus.h>
 
 #include "hw.h"