[PATCH 2/6] arm64: add alternative runtime patching

With a blatant copy of some x86 bits we introduce the alternative runtime patching "framework" to arm64. This is quite basic for now and we only provide the functions we need at this time. This is connected to the newly introduced feature bits. Signed-off-by: Andre Przywara ---

[PATCH 2/6] arm64: add alternative runtime patching

With a blatant copy of some x86 bits we introduce the alternative runtime patching framework to arm64. This is quite basic for now and we only provide the functions we need at this time. This is connected to the newly introduced feature bits. Signed-off-by: Andre Przywara andre.przyw...@arm.com