Also change the tarball from .tar.bz2 to .tar.xz.
Change-Id: I25134dbadf07a2f0cb356c8ac8f2c612a957d176
Signed-off-by: Iru Cai <mytbk920423@gmail.com>
Reviewed-on: https://review.coreboot.org/20806
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>