[llvm] [llvm-objcopy] Add --change-section-address (PR #98664)

[Eleanor Bonnici via llvm-commits]

eleanor-arm wrote:

Yes, I changed it in Fiasco recently, the older versions would still need this. There seems to be some popularity of using --change-section-address to "shift" data sections during conversion from an ELF object file to binary in embedded systems. Another example: https://github.com/charlottestick/SimpleOS/blob/2b63c6481353d6cc1ae2a198e847a3716e52e6e3/compile.sh#L27

Thanks @smithp35 for the example. 

https://github.com/llvm/llvm-project/pull/98664