The console log data is written to is created at console initialisation
time and does not change over reset events. This ensures the
BB_CONSOLELOG value is correct over such resets by preserving it.
(Bitbake rev: 335eb2db228f7543a49de71f063ac72b865c947a)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>