This commit adds an optional layerid argument which can
be passed to the bitbake-layers create-layer command.
This allows for creation of a layer with a layer id
different to that of the layer's name. The default
behaviour of the command where the layer's id is set
to the layer's name is still retained.
Signed-off-by: Charlie Davies <charles.davies@whitetree.xyz> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
