sanity: Do not mistake meta-yocto-bsp for meta-yocto
The code in oecore_update_bblayers() handling the transition from
meta-yocto to meta-poky was not very resilient. It would, e.g.,
mistake meta-yocto-bsp for meta-yocto if the former occurred before
the latter in BBLAYERS.
The code also failed to update multiple existences of meta-yocto in
the bblayers.conf file, e.g., if it was present in
BBLAYERS_NON_REMOVABLE in addition to BBLAYERS (which it is by
default).
Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
