Add 'CPU_PAGE_MASK' used for calculate address,
Change IA32E_REF_MASK from 0x7ffffffffffff000 to 0x000ffffffffff000
for MMU/EPT entry, bit62:52(ignore) bit63(VE/XD)
if we want to obtain the address from the MMU/EPT entry,need to clear
bit63:52 by IA32E_REF_MASK
Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>