MdeModulePkg: Rename IS_ALIGNED macros to avoid name collisions

This patch is a preparation for the patches that follow. The
subsequent patches will introduce and integrate new alignment-related
macros, which collide with existing definitions in MdeModulePkg.
Temporarily rename them to avoid build failure, till they can be
substituted with the new, shared definitions.

Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Signed-off-by: Marvin Häuser <mhaeuser@posteo.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
Reviewed-by: Michael D Kinney <michael.d.kinney@intel.com>

MdeModulePkg/Bus/Ata/AhciPei/AhciMode.c

@@ -2126,7 +2126,7 @@ TrustTransferAtaDevice (
     // ATA PassThru PPI.
     //
     if ((AtaPassThru->Mode->IoAlign > 1) &&
-        !IS_ALIGNED (Buffer, AtaPassThru->Mode->IoAlign))
+        !ADDRESS_IS_ALIGNED_ (Buffer, AtaPassThru->Mode->IoAlign))
     {
       NewBuffer = AllocateAlignedPages (
                     EFI_SIZE_TO_PAGES (TransferLength),