hwmon: (coretemp) Replace sensor_device_attribute with device_attribute

Replace sensor_device_attribute with device_attribute because
sensor_device_attribute->index is no longer used.

No functional change.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Link: https://lore.kernel.org/r/20240202092144.71180-7-rui.zhang@intel.com


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