dev-manual: Updated the layer.conf example

The meta-yocto-bsp/conf/layer.conf example had gone stale.
I updated it.

(From yocto-docs rev: bf77d70789f85400e2d6be7e4e32475506183217)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/documentation/dev-manual/dev-manual-common-tasks.xml b/documentation/dev-manual/dev-manual-common-tasks.xml
index a4b1c824dc..9937986062 100644
--- a/documentation/dev-manual/dev-manual-common-tasks.xml
+++ b/documentation/dev-manual/dev-manual-common-tasks.xml
@@ -150,6 +150,7 @@
      BBFILE_COLLECTIONS += "yoctobsp"
      BBFILE_PATTERN_yoctobsp = "^${LAYERDIR}/"
      BBFILE_PRIORITY_yoctobsp = "5"
+     LAYERVERSION_yoctobsp = "2"
                         </literallayout></para>
                         <para>Here is an explanation of the example:
                         <itemizedlist>
@@ -194,6 +195,10 @@
                                 where the same package might appear in multiple
                                 layers and allows you to choose what layer
                                 should take precedence.</para></listitem>
+                            <listitem><para>The
+                                <filename><ulink url='&YOCTO_DOCS_REF_URL;#var-LAYERVERSION'>LAYERVERSION</ulink></filename>
+                                variable optionally specifies the version of a
+                                layer as a single number.</para></listitem>
                         </itemizedlist></para>
                         <para>Note the use of the
                         <filename><ulink url='&YOCTO_DOCS_REF_URL;#var-LAYERDIR'>LAYERDIR</ulink></filename>