Merge branch 'bpf-arm64-riscv-remove-redundant-icache-flush-after-pack-allocator...

Puranjay Mohan says:

====================
bpf, arm64/riscv: Remove redundant icache flush after pack allocator finalize

Changelog:
v1: https://lore.kernel.org/all/20260413123256.3296452-1-puranjay@kernel.org/
Changes in v2:
- Remove "#include <asm/cacheflush.h>" as it is not needed now.
- Add Acked-by: Song Liu <song@kernel.org>

When the BPF prog pack allocator was added for arm64 and riscv, the
existing bpf_flush_icache() calls were retained after
bpf_jit_binary_pack_finalize(). However, the finalize path copies the
JITed code via architecture text patching routines (__text_poke on arm64,
patch_text_nosync on riscv) that already perform a full
flush_icache_range() internally. The subsequent bpf_flush_icache()
repeats the same cache maintenance on the same range.

Remove the redundant flush and the now-unused bpf_flush_icache()
definitions on both architectures.
====================

Link: https://patch.msgid.link/20260413191111.3426023-1-puranjay@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>