[PATCH 1/1] fix i2c_msg.len not aligning with i2c_master_send

[Eric Miao]

> How about return error in i2c_master_send & i2c_master_recv when count
> is bigger than 64K, as suggested by Ben.

I think that's more preferable. Making the count parameter as u16,
though is going to generate a warning, yet that's usually ignored
by careless programmer, screaming out when this happens might
be more useful sometimes.

> The device I used could receive 32K one time instead, the firmware
> download only takes place on-demand in fact.
> However, it took some time to debug, since no error info come out.
> Add error msg may notify users, though transfering more than 64K data
> one time is rarely happen.
>
> Thanks
> Zhangfei
>