platform: mellanox: mlxreg-hotplug: Extend condition for notification callback processing

platform: mellanox: mlxreg-hotplug: Extend condition for notification callback processing

Allow processing of notification callback in routine
mlxreg_hotplug_device_create() in case hotplug object is configured
with action "MLXREG_HOTPLUG_DEVICE_NO_ACTION" in case no I2C parent bus
is specified.

Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Michael Shych <michaelsh@nvidia.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230822113451.13785-15-vadimp@nvidia.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>