rng: allow default device in RNG grammar

This matches the documentation of commit 4932ef4, and the
C code changes of commit 75e656a.

* docs/schemas/domaincommon.rng: Allow default entry.

diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 4b608855affb27294c8d12c5e35a92f8c0622fa8..372aab73a32e8610ce553b75191bbac1f0cc2bd1 100644 (file)
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -3514,6 +3514,7 @@
           <choice>
             <value>/dev/random</value>
             <value>/dev/hwrng</value>
+            <empty/>
           </choice>
         </group>
         <group>