This variable plays a much smaller role since recipe-specific
sysroots were implemented. I have rewritten the description to say
that STAGING_DIR helps construct the recipe-sysroots directory.
(From yocto-docs rev: c1ad18abe67111738efc18725c4f7706b55738cb)
Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>