MdePkg: Add definitions for SMBIOS spec 3.1.1
    
    REF: https://bugzilla.tianocore.org/show_bug.cgi?id=349
    
    This patch is to add definitions for below items.
    Processor Information (Type 4):
    - add socket SP3r2
    - add AMD Zen Processor Family
    Management Controller Host Interface (Type 42):
    - include Host Interface Type and Protocol Identifier enumerations
    
    Cc: Liming Gao <liming.gao@intel.com>
    Cc: Michael Kinney <michael.d.kinney@intel.com>
    Contributed-under: TianoCore Contribution Agreement 1.0
    Signed-off-by: Star Zeng <star.zeng@intel.com>
    Reviewed-by: Liming Gao <liming.gao@intel.com>