sfc: add bits for 25/50/100G supported/advertised speeds

sfc: add bits for 25/50/100G supported/advertised speeds

BugLink: https://bugs.launchpad.net/bugs/1836635
Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 5abb5e7f916ee8d2d2543fb70edb2817284203cc)
Signed-off-by: Mauricio Faria de Oliveira <mfo@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>