arch/arm64/crypto: fix CFI in AES CE

Move inline assembly to a separate object file that's compiled with
LTO disabled due to incompatibility with clang's internal assembler.
Add wrappers to allow indirect calls without tripping CFI.

Bug: 67506682
Change-Id: I582b22dcdbb0bb59149f3b4cfce132b1e2d145cd
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>