[U-Boot] [PATCH]Fix checksum to handle odd-length packet

[Greg Ren]

Jerry Van Baren wrote:

> When you respin your patch, please put the "ping with an odd length 
> causes an incorrect checksum bug" in the commit message for future 
> reference.

> Thanks,
> gvb

The change was to the general checksum calculation. So there is enough
reason to believe that any odd-length packet may suffer the same fate.
Ping is just an easier way to test and verify the fix.

regards
Greg Ren