Currently the second tlv320aic3x instance fails to
be probed from DT if the reset pin is shared with
the first one.

This patch fixes it by moving the list add of the
reset pin into the i2c_probe method.
Signed-off-by: NSebastian Reichel <sre@kernel.org>
Signed-off-by: NMark Brown <broonie@linaro.org>