I believe this code dates from previous times when we didn't extend
the TOOLCHAIN_TARGET* variables to cover all multilibs. We now do
this so this code acutally breaks things by removing the non-multilib
variants.
By changing this, a multilib SDK now contains both sets of base libraries
which matches the tools we ship with it. If the user wishes to customise,
this also becomes easier.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
