MdeModulePkg DxeCore: Return memory type from internal free pool/pages

MdeModulePkg DxeCore: Return memory type from internal free pool/pages

The following patch for MemoryAttributesTable will need the memory type.
And CoreUpdateProfile() can also use the memory type for check.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Feng Tian <feng.tian@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>