Add basic sepolicy for the IVmCapabilities HAL

Bug: 360102915
Test: builds
Test: presubmit
Change-Id: I1b7f73a9e3ff1ad35c318ac56667c64775de4064
diff --git a/private/attributes b/private/attributes
index 13479c9..0da777a 100644
--- a/private/attributes
+++ b/private/attributes
@@ -31,3 +31,7 @@
 until_board_api(202504, `
     attribute tee_service_type;
 ')
+
+until_board_api(202504, `
+    hal_attribute(vm_capabilities);
+')