Consume PcdMaxMappingAddressBeforeTempRamExit for page table creation in permanent memory before Temp Ram Exit. This patch will create the full page table in two steps: Step 1: Create the max address in page table before the Temporary RAM exit. Step 2: Create the full range page table after the Temporary RAM exit. Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com>