Limit the split to key & value (2 items) instead of the n items one
can get if there are '=' characters in the value.
Fixes [YOCTO #15447]
(Bitbake rev: 86315961829ab1d137a0265cc246c44d3929e1fb)
Signed-off-by: david d zuhn <david.zuhn@sonos.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>