mlxsw: remove I2C_CLASS_HWMON from drivers w/o detect and address_list

mlxsw: remove I2C_CLASS_HWMON from drivers w/o detect and address_list

Class-based I2C probing requires detect() and address_list to be
set in the I2C client driver, see checks in i2c_detect().
It's misleading to declare I2C_CLASS_HWMON support if this
precondition isn't met.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://lore.kernel.org/r/77b5ab8e-20f2-4310-bd89-57db99e2f53b@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>