Move serial HW definition to another file.

Signed-off-by: gogojesse <gogojesseco@gmail.com>
Separate serial HW definition here.

Signed-off-by: gogojesse <gogojesseco@gmail.com>
Versatileph only support armv5xx instruction.

Signed-off-by: gogojesse <gogojesseco@gmail.com>
Replace Android Qemu+goldfish with standard QEMU+Versatilepb

Signed-off-by: gogojesse <gogojesseco@gmail.com>