hwmon: max31827: include regulator header

Include `linux/regulator/consumer.h` since the driver is using
`devm_regulator_get_enable` function.

Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Link: https://lore.kernel.org/r/20231031091324.23991-1-antoniu.miclaus@analog.com


Signed-off-by: Guenter Roeck <linux@roeck-us.net>