install-buildtools: support buildtools-make-tarball and update to 4.1

install-buildtools: support buildtools-make-tarball and update to 4.1

Support installing buildtools-make-tarball that is built in version 4.1
and later for build hosts with a broken make version. Also update the
default version values to 4.1.

Signed-off-by: Paul Eggleton <paul.eggleton@microsoft.com>
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>