[PATCH] sk98lin hardware rx csum offload logic

The sk98lin driver drops received packets that have an invalid 
IP/UDP/TCP checksum-- it should be passing these packets up the stack by 
marking the skb's ip_summed to CHECKSUM_NONE rather than simply dropping 
them (ref. 
http://efault.net/npat/docs_and_postings/net_device-features/net_device-features.txt 
and other network driver implementations)

Attached is a patch against the latest BK 2.6 kernel.  This issue also 
applies to 2.4 and the latest version of the driver (8.13.1.3) on the 
SysKonnect site, though in that case a similar fix needs to be made to 
the sky2.c Yukon2 support.

I'm not on the netdev list, so if there is any further discussion please 
include me directly.

Thanks,
E