hwspec:added two elements are rz_nm_per_step and lz_nm_per_step
hwspec:added two elements are rz_nm_per_step and lz_nm_per_step

Signed-off-by: qianrunsheng <9b6feaf924ab964a5e6d420369c77093cc58e13c@163.com>

walkthetalk/libem,walkthetalk/libem,walkthetalk/libem