AppPkg: Enable ARM and AArch64 support
AppPkg: Enable ARM and AArch64 support

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Harry Liebel <Harry.Liebel@arm.com>
Reviewed-By: Olivier Martin <olivier.martin@arm.com>
Reviewed-By: Daryl McDaniel <daryl.mcdaniel@intel.com>


git-svn-id: 3158a46dfd52e07d1fda3e32e1ab2e353a00b20f@15857 6f19259b-4bc3-4df7-8a09-765794883524

MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2,MattDevo/edk2