ref-manual: Edits to the INITRAMFS_IMAGE_BUNDLE variable.

Fixes [YOCTO #4072]

Added that the kernel class sets the variable to a null string
by default.

(From yocto-docs rev: d00ea912ad9ad1558546496e72fca229b9b8081b)

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

1 files changed, 6 insertions, 0 deletions

diff --git a/documentation/ref-manual/ref-variables.xml b/documentation/ref-manual/ref-variables.xml
index e2c0933473..19a53e0417 100644
--- a/documentation/ref-manual/ref-variables.xml
+++ b/documentation/ref-manual/ref-variables.xml
@@ -3055,6 +3055,12 @@ recipes-graphics/xorg-font/font-alias_1.0.3.bb:PR = "${INC_PR}.3"
                     <literallayout class='monospaced'>
      INITRAMFS_IMAGE_BUNDLE = "1"
                     </literallayout>
+                    By default, the
+                    <link linkend='ref-classes-kernel'><filename>kernel</filename></link>
+                    class sets this variable to a null string as follows:
+                    <literallayout class='monospaced'>
+     INITRAMFS_IMAGE_BUNDLE = ""
+                    </literallayout>
                     <note>
                         You must set the
                         <filename>INITRAMFS_IMAGE_BUNDLE</filename> variable in