BaseTools/AutoGen: Update header file for MM modules.

BaseTools/AutoGen: Update header file for MM modules.

This patch corrects the Module Type Header file for Management Mode(MM)
as specified in PI v1.6 Specification. Also, it updates parameter for
auto generated template functions from EFI_SMM_SYSTEM_TABLE2 to
EFI_MM_SYSTEM_TABLE.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Supreeth Venkatesh <supreeth.venkatesh@arm.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>