hwmon: (tmp513) Fix the channel number in tmp51x_is_visible()

hwmon: (tmp513) Fix the channel number in tmp51x_is_visible()

The supported channels for this driver are {0..3}. Fix the incorrect
channel in tmp51x_is_visible().

Reported-by: Guenter Roeck <linux@roeck-us.net>
Closes: https://lore.kernel.org/all/ea0eccc0-a29f-41e4-9049-a1a13f8b16f1@roeck-us.net/
Fixes: 59dfa75e5d82 ("hwmon: Add driver for Texas Instruments TMP512/513 sensor chips.")
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20230824204456.401580-2-biju.das.jz@bp.renesas.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>