ANDROID: arm64: add __nocfi to __apply_alternatives

__apply_alternatives makes indirect calls to functions whose address is
taken in assembly code using the alternative_cb macro. With CFI enabled
using non-canonical jump tables, the compiler isn't able to replace the
function reference with the jump table reference, which trips CFI.

Bug: 145210207
Change-Id: I088faf94b64ac3068ac798dd8e5029cb2ab92903
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>