The following target are add back:
i386-softmmu,arm-softmmu,ppc-softmmu,mips-softmmu

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20201007145300.1197-3-luoyonggang@gmail.com>
Message-Id: <20201007160038.26953-6-alex.bennee@linaro.org>