[DRAFT] Separate spec_v1/v4 barrier instructions

arch/arm/net/bpf_jit_32.c

arch/arm64/net/bpf_jit_comp.c

arch/loongarch/net/bpf_jit.c

arch/mips/net/bpf_jit_comp32.c

arch/mips/net/bpf_jit_comp64.c

arch/powerpc/net/bpf_jit_comp32.c

arch/powerpc/net/bpf_jit_comp64.c

arch/riscv/net/bpf_jit_comp32.c

arch/riscv/net/bpf_jit_comp64.c

arch/s390/net/bpf_jit_comp.c

arch/sparc/net/bpf_jit_comp_64.c

arch/x86/net/bpf_jit_comp.c

arch/x86/net/bpf_jit_comp32.c

include/linux/bpf_verifier.h

include/linux/filter.h

kernel/bpf/core.c

kernel/bpf/verifier.c