extcon: ptn5150: Convert to .probe_new

The 'struct i2c_device_id' argument of probe function is not used, so
convert the driver to simpler 'probe_new' interface.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Vijai Kumar K <vijaikumar.kanagarajan@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>