[libvirt] [PATCH] docs: update docs for setting the QEMU BIOS file path

[Chen Hanxiao]

commit ddf2dfa1f79af0405df5ca10583764a497c7a0db
provides a way to determine which bios files to use.
So we need to update related docs.

disccussed at:
http://www.redhat.com/archives/libvir-list/2012-June/msg01286.html

Signed-off-by: Chen Hanxiao <chenhanxiao at cn.fujitsu.com>
---
 docs/formatdomain.html.in | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index e851f85..93f14fa 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -128,7 +128,13 @@
       <dd>The optional <code>loader</code> tag refers to a firmware blob
         used to assist the domain creation process. At this time, it is
         only needed by Xen fully virtualized
-        domains. <span class="since">Since 0.1.0</span></dd>
+        domains. <span class="since">Since 0.1.0</span>
+      <p>
+      It could also be used to set the QEMU BIOS file path.
+      Then guest will be started with that BIOS file.
+      <span class="since">Since 0.9.12</span>
+      </p>
+      </dd>
       <dt><code>boot</code></dt>
       <dd>The <code>dev</code> attribute takes one of the values "fd", "hd",
         "cdrom" or "network" and is used to specify the next boot device
-- 
1.9.0