ArmVirtualizationPkg: clone PlatformIntelBdsLib from ArmPlatformPkg
In the next patch(es) we'll customize the PlatformBdsLib instance used by
ArmVirtualizationQemu.dsc. Let's clone it first verbatim from
ArmPlatformPkg/Library/PlatformIntelBdsLib, changing only its FILE_GUID.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>