[PATCH][4.15] libxl/Arm: correct xc_shadow_control() invocation to fix build

[Jan Beulich]

The backport didn't adapt to the earlier function prototype taking more
(unused here) arguments.

Fixes: c5215044578e ("xen/arm, libxl: Implement XEN_DOMCTL_shadow_op for Arm")
Signed-off-by: Jan Beulich <jbeul...@suse.com>
---
Also applicable to 4.14 and 4.13.

--- a/tools/libs/light/libxl_arm.c
+++ b/tools/libs/light/libxl_arm.c
@@ -136,7 +136,7 @@ int libxl__arch_domain_create(libxl__gc *gc,
 
     int r = xc_shadow_control(ctx->xch, domid,
                               XEN_DOMCTL_SHADOW_OP_SET_ALLOCATION,
-                              &shadow_mb, 0);
+                              NULL, 0, &shadow_mb, 0, NULL);
     if (r) {
         LOGED(ERROR, domid,
               "Failed to set %u MiB shadow allocation", shadow_mb);