currently the --cmd-len build option does not work. This patch is going to fix this bug. Signed-off-by: Bob Feng <bob.c.feng@intel.com> Cc: Liming Gao <gaoliming@byosoft.com.cn> Cc: Yuwei Chen <yuwei.chen@intel.com> Reviewed-by: Yuwei Chen <yuwei.chen@intel.com>