UefiCpuPkg/CpuDxe: Remove unnecessary macros

UefiCpuPkg/CpuDxe: Remove unnecessary macros

Today's code defines macros like CR0_PG, CR0_WP, CR4_PSE, CR4_PAE
when checking whether individual bits are set in CR0 or CR4 register.

The patch changes the code to use IA32_CR0 and IA32_CR4 structure
defined in MdePkg/Include/Library/BaseLib.h so that the module
local macros can be removed.

There is no functionality impact to this change.

Cc: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Ray Ni <ray.ni@intel.com>
Reviewed-by: Eric Dong <eric.dong@intel.com>
Regression-tested-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Eric Dong <eric.dong@intel.com>