[PATCH RFC rebase 5/9] powerpc/64s: Add support for ori barrier_nospec patching

Based on the RFI patching. This is required to be able to disable the speculation barrier. Only one barrier type is supported and it does nothing when the firmware does not enable it. Also re-patching modules is not supported So the only meaningful thing that can be done is patching out the

[PATCH RFC rebase 5/9] powerpc/64s: Add support for ori barrier_nospec patching

Based on the RFI patching. This is required to be able to disable the speculation barrier. Only one barrier type is supported and it does nothing when the firmware does not enable it. Also re-patching modules is not supported So the only meaningful thing that can be done is patching out the