spec: Enable sanlock on qemu_kvm_arches for RHEL

Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

libvirt.spec.in

@@ -260,12 +260,12 @@
 %endif
 
 # Enable sanlock library for lock management with QEMU
-# Sanlock is available only on x86_64 for RHEL
+# Sanlock is available only on arches where kvm is available for RHEL
 %if 0%{?fedora} >= 16
     %define with_sanlock 0%{!?_without_sanlock:%{server_drivers}}
 %endif
 %if 0%{?rhel} >= 6
-    %ifarch x86_64
+    %ifarch %{qemu_kvm_arches}
         %define with_sanlock 0%{!?_without_sanlock:%{server_drivers}}
     %endif
 %endif