devlink: Add new "clock_id" generic device param

Add a new device generic parameter to specify clock ID that should
be used by the device for registering DPLL devices and pins.

Signed-off-by: Ivan Vecera <[e-mail]>
Reviewed-by: Jiri Pirko <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

Documentation/networking/devlink/devlink-params.rst

···
    * - ``enable_phc``
      - Boolean
      - Enable PHC (PTP Hardware Clock) functionality in the device.
+   * - ``clock_id``
+     - u64
+     - Clock ID used by the device for registering DPLL devices and pins.

include/net/devlink.h

···
 	DEVLINK_PARAM_GENERIC_ID_IO_EQ_SIZE,
 	DEVLINK_PARAM_GENERIC_ID_EVENT_EQ_SIZE,
 	DEVLINK_PARAM_GENERIC_ID_ENABLE_PHC,
+	DEVLINK_PARAM_GENERIC_ID_CLOCK_ID,
 
 	/* add new param generic ids above here*/
 	__DEVLINK_PARAM_GENERIC_ID_MAX,
···
 
 #define DEVLINK_PARAM_GENERIC_ENABLE_PHC_NAME "enable_phc"
 #define DEVLINK_PARAM_GENERIC_ENABLE_PHC_TYPE DEVLINK_PARAM_TYPE_BOOL
+
+#define DEVLINK_PARAM_GENERIC_CLOCK_ID_NAME "clock_id"
+#define DEVLINK_PARAM_GENERIC_CLOCK_ID_TYPE DEVLINK_PARAM_TYPE_U64
 
 #define DEVLINK_PARAM_GENERIC(_id, _cmodes, _get, _set, _validate)	\
 {									\

net/devlink/param.c

···
 		.name = DEVLINK_PARAM_GENERIC_ENABLE_PHC_NAME,
 		.type = DEVLINK_PARAM_GENERIC_ENABLE_PHC_TYPE,
 	},
+	{
+		.id = DEVLINK_PARAM_GENERIC_ID_CLOCK_ID,
+		.name = DEVLINK_PARAM_GENERIC_CLOCK_ID_NAME,
+		.type = DEVLINK_PARAM_GENERIC_CLOCK_ID_TYPE,
+	},
 };
 
 static int devlink_param_generic_verify(const struct devlink_param *param)