bnxt_en: Modify the driver to use hwmon_device_register_with_info

The use of hwmon_device_register_with_groups() is deprecated.
Modified the driver to use hwmon_device_register_with_info().

Driver currently exports only temp1_input through hwmon sysfs
interface. But FW has been modified to report more threshold
temperatures and driver want to report them through the
hwmon interface.

Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-hwmon@vger.kernel.org
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>