alx: fix ethtool support code
alx: fix ethtool support code

A number of places treated features wrongly, listing not-supported
features instead of supported ones. Also, the get_drvinfo ethtool
callback isn't needed, and alx_get_pauseparam can be simplified.

Reported-by: Ben Hutchings <73675debcd8a436be48ec22211dcf44fe0df0a64@decadent.org.uk>
Signed-off-by: Johannes Berg <8398eb9892c5ab2ff439ca0b5e4b0706dd9ebef9@sipsolutions.net>
Signed-off-by: David S. Miller <fe08d3c717adf2ae63592e4c9aec6e3e404d8e3e@davemloft.net>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs