bpf: Eliminate rlimit-based memory accounting for devmap maps

bpf: Eliminate rlimit-based memory accounting for devmap maps

[ Upstream commit 844f157f6c0a905d039d2e20212ab3231f2e5eaf ]

Do not use rlimit-based memory accounting for devmap maps.
It has been replaced with the memcg-based memory accounting.

Signed-off-by: Roman Gushchin <guro@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20201201215900.3569844-23-guro@fb.com
Stable-dep-of: 281d464a34f5 ("bpf: Fix DEVMAP_HASH overflow check on 32-bit arches")
Signed-off-by: Sasha Levin <sashal@kernel.org>