bpf, mips: Implement DADDI workarounds for JIT

For DADDI errata we just workaround by disable immediate operation
for BPF_ADD / BPF_SUB to avoid generation of DADDIU.

All other use cases in JIT won't cause overflow thus they are all safe.

Signed-off-by: Jiaxun Yang <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Acked-by: Johan Almbladh <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]

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