perf beauty: Update copy of linux/socket.h with the kernel sources

perf beauty: Update copy of linux/socket.h with the kernel sources

To pick the changes in:

  8f0b3cc9a4c102c2 ("tcp: RX path for devmem TCP")

That don't result in any changes in the tables generated from that
header.

But while updating I noticed we need to support the new MSG_SOCK_DEVMEM
flag in the hard coded table for the msg flags table, add it.

This silences this perf build warning:

  Warning: Kernel ABI header differences:
    diff -u tools/perf/trace/beauty/include/linux/socket.h include/linux/socket.h

Please see tools/include/uapi/README for details.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/ZvrO_eT9e_41xrNv@x1
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>