Retire all implementations of the ArmGicLib library class, which are no
longer used. For now, retain the library header and library class
declaration: the header file only contains pre-processor defines derived
from the GIC architecture spec, and so this code should probably move
into MdePkg at a later moment.
Continuous-integration-options: PatchCheck.ignore-multi-package
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
0bb40c79be