Merge branch 'bpf: use 32bit safe version of u64_stats'

Eric Dumazet says:

====================

From: Eric Dumazet <edumazet@google.com>

Two first patches fix bugs added in 5.1 and 5.5

Third patch replaces the u64 fields in struct bpf_prog_stats
with u64_stats_t ones to avoid possible sampling errors,
in case of load/store stearing.
====================

Signed-off-by: Alexei Starovoitov <ast@kernel.org>