Fix ECC error "[10014] No used module files found. The source file
[StandaloneMmCpu.h] is existing in module directory but it is not
described in INF file."
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Acked-by: Jiewen Yao <Jiewen.yao@intel.com> Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com> Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>