[PATCH] serial: samsung: fix typo in debug code

Hi Arnd,

On Tue, Jun 3, 2014 at 3:23 PM, Arnd Bergmann [off-list ref] wrote:

commit e4ac92df2791 ("serial: samsung: Neaten dbg uses") introduced
a regression in the conversion from vsprintf to vsnprintf.

This fixes the build error by passing the correct variable name.

I submitted a similar patch sometime back.
http://www.spinics.net/lists/linux-serial/msg12843.html

Regards,
Sachin