sfc: Fix reading non-legacy supported link modes

sfc: Fix reading non-legacy supported link modes

Origin: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit?id=05aac25fbf06b72c87bc5126e210714dcaac404e

commit 041c61488236a5a84789083e3d9f0a51139b6edf upstream.

Everything except the first 32 bits was lost when the pause flags were
added. This makes the 50000baseCR2 mode flag (bit 34) not appear.

I have tested this with a 10G card (SFN5122F-R7) by modifying it to
return a non-legacy link mode (10000baseCR).

Signed-off-by: Erik Ekman <erik@kryo.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gbp-Pq: Topic bugfix/all
Gbp-Pq: Name sfc-Fix-reading-non-legacy-supported-link-modes.patch