populate_sdk_rpm: Sync multilib configuration with rootfs_rpm
An anonymous python chunk configures some multilib settings for both
populate_sdk_rpm and rootfs_rpm. The two classes should contain identical
versions to ensure that the generated multilib configuration is the same
for the SDK and the rootfs.
Signed-off-by: Mark Hatle <mark.hatle@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>