As a "normal" recipe, mulitlib would try and extend it for multilibs.
By inheriting module-base, we can avoid this since we now look more
'kernel' like.
(From OE-Core rev: 59f08c9144e6f81906154cb306db6fee14dc42ca)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>