Merge branch 'bpf-xdp-remove-xdp-flush'

Jesper Dangaard Brouer says:

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This patchset removes the net_device operation ndo_xdp_flush() call.
This is a follow merge commit ea9916ea ("Merge branch
'ndo_xdp_xmit-cleanup'").  As after commit c1ece6b2 ("bpf/xdp:
devmap can avoid calling ndo_xdp_flush") no callers of ndo_xdp_flush
are left in bpf-next tree.
====================

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>