xen/flask: Wire up XEN_DOMCTL_set_llc_colors

Addition of FLASK permission for this hypercall was overlooked in the
original patch. Fix it. Setting LLC colors is only possible during domain
creation.

Fixes: 6985aa5e0c ("xen: extend domctl interface for cache coloring")
Signed-off-by: Michal Orzel <michal.orzel@amd.com>
Release-Acked-By: Oleksii Kurochko <oleksii.kurochko@gmail.com>
Acked-by: Daniel P. Smith <dpsmith@apertussolutions.com>

tools/flask/policy/modules/xen.if

@@ -54,7 +54,7 @@ define(`create_domain_common', `
 	allow $1 $2:domain2 { set_cpu_policy settsc setscheduler setclaim
 			set_vnumainfo get_vnumainfo cacheflush
 			psr_cmt_op psr_alloc soft_reset
-			resource_map get_cpu_policy vuart_op };
+			resource_map get_cpu_policy vuart_op set_llc_colors };
 	allow $1 $2:security check_context;
 	allow $1 $2:shadow enable;
 	allow $1 $2:mmu { map_read map_write adjust memorymap physmap pinpage mmuext_op updatemp };