BoardModulePkg/CmosAccessLib: Update the end of last line

The original end of last line is '/r'. Now update it to '/r/n'.

Cc: Eric Dong <eric.dong@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>