kernel-dev, ref-manual: Edits to KBRANCH.

Applied some edits to the areas where KBRANCH is discussed.
Clarified that setting it is not optional any longer.

(From yocto-docs rev: 4d0b2d92140d066048d9ff36453c7ea589eebe55)

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

1 files changed, 2 insertions, 3 deletions

diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index 6bcbbb316f..98799d5c95 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -5758,10 +5758,9 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
             <glossdef>
                 <para role="glossdeffirst"><imagedata fileref="figures/define-generic.png" />
                     A regular expression used by the build process to explicitly
-                    identify the kernel branch that is validated, patched
+                    identify the kernel branch that is validated, patched,
                     and configured during a build.
-                    The <filename>KBRANCH</filename> variable is optional.
-                    You can use it to trigger checks to ensure the exact kernel
+                    You must set this variable to ensure the exact kernel
                     branch you want is being used by the build process.
                 </para>