yocto-project-qs: Updates to how to use local directories for source

The section that describes an efficient way to set up the
build system to look in local areas for tarballs needed updated
so that PREMIRRORS was not the focus.  The example used does
not even employ PREMIRRORS.  So I changed wording to support
the example.  I also added a mention of the PREMIRRORS variable
and a linked reference to it for more information.

(From yocto-docs rev: 7966942e2dfad85c2eb9480d7f706355871c40ab)

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

0 files changed, 0 insertions, 0 deletions