tools: libxc: Add nomigrate stubs for xc_domain_(save|restore)2.

Fixes the build on ARM after the switch to migration v2 in
210b481752 "tools/libxc+libxl+xl: Save v2 streams" and
3a9ace0147 "tools/libxc+libxl+xl: Restore v2 streams".

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>

tools/libxc/xc_nomigrate.c

@@ -29,6 +29,14 @@ int xc_domain_save(xc_interface *xch, int io_fd, uint32_t dom, uint32_t max_iter
     return -1;
 }
 
+int xc_domain_save2(xc_interface *xch, int io_fd, uint32_t dom, uint32_t max_iters,
+                    uint32_t max_factor, uint32_t flags,
+                    struct save_callbacks* callbacks, int hvm)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
 int xc_domain_restore(xc_interface *xch, int io_fd, uint32_t dom,
                       unsigned int store_evtchn, unsigned long *store_mfn,
                       domid_t store_domid, unsigned int console_evtchn,
@@ -41,6 +49,18 @@ int xc_domain_restore(xc_interface *xch, int io_fd, uint32_t dom,
     return -1;
 }
 
+int xc_domain_restore2(xc_interface *xch, int io_fd, uint32_t dom,
+                       unsigned int store_evtchn, unsigned long *store_mfn,
+                       domid_t store_domid, unsigned int console_evtchn,
+                       unsigned long *console_mfn, domid_t console_domid,
+                       unsigned int hvm, unsigned int pae, int superpages,
+                       int checkpointed_stream,
+                       struct restore_callbacks *callbacks)
+{
+    errno = ENOSYS;
+    return -1;
+}
+
 /*
  * Local variables:
  * mode: C