populate_sdk_base: Ensure that the multilib cross-canadian tools are used

populate_sdk_base: Ensure that the multilib cross-canadian tools are used

Update the host toolchain list, for cross-canadian toolchains, to ensure
that all of the supported multilibs are built and installed.  This
dynamically generates the dependnecy set based on the current multilib
configuration.

(From OE-Core rev: 54bc658416ea5679bbfdc76e3ef8767c0a15211c)

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>