Following UEFI spec, update SmbiosDxe to use EfiRuntimeServicesData to put SMBIOS table. Update LegacyBiosDxe to move SMBIOS table to reserved memory for backward compatibility.

Signed-off-by: Elvin Li <elvin.li@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/MdeModulePkg@14932 6f19259b-4bc3-4df7-8a09-765794883524