ArmPkg: Expand AArch64 address width to 48 bits
ArmPkg: Expand AArch64 address width to 48 bits

The VA address space has a maximum address width of 48 bits in
AArch64 state; 48 bits address width limit will provide better
compatibility than 40 bits for future CPU.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Heyi Guo <heyi.guo@linaro.org>
Reviewed-by: Olivier Martin <Olivier.Martin@arm.com>



git-svn-id: 3158a46dfd52e07d1fda3e32e1ab2e353a00b20f@17526 6f19259b-4bc3-4df7-8a09-765794883524

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