[PATCH] I2C: via686a cleanups

Here comes a small cleanup patch for the via686a driver. I noticed the
following two non-fatal problems:

1* The device parent is explicitely set, but it's not needed because the
i2c core will do as the client is registered.

2* snprintf is used where strlcpy would suffice.

Fixing them brings the via686a driver in line with what other similar
drivers do.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>