Merge branch 'qed-XDP-header-adjust'

Merge branch 'qed-XDP-header-adjust'

Yuval Mintz says:

====================
qede: support XDP head adjustments

Daniel has brought to my attention the fact that qede is the only driver
that currently supports XDP but still fails any program where
xdp_adjust_head is set on the bpf_prog. This series is meant to remedy
this and align qede with the rest of the driver, making it possible to
remove said field.

Patch #1 contains a minor cache-saving optimization for latter patches.

Patches #2 & #3 address existing issues with the qede implementation
[#2 should have been a part of this as it addresses something that's
affected by the additional headroom; #3 is simply here for the ride].

Patches #4 & #5 add the necessary logic in driver for ingress headroom,
the first adding the infrastrucutre needed for supporting the headroon
[as currently qede doesn't support such], and the second removing the
existing XDP limitation.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>