docs: add more driver-model infrastructure interfaces

Add bus, class, and device data structures and enum constants to the
Driver-Model Structures section and add function interfaces to the
Device Drivers Base section of the Device drivers infrastructure chapter.

Signed-off-by: Randy Dunlap <[e-mail]>
Cc: Jonathan Corbet <[e-mail]>
Cc: [e-mail]
Cc: Greg Kroah-Hartman <[e-mail]>
Cc: "Rafael J. Wysocki" <[e-mail]>
Signed-off-by: Jonathan Corbet <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/driver-api/infrastructure.rst

···
    :internal:
    :no-identifiers: device_link_state
 
+.. kernel-doc:: include/linux/device/bus.h
+   :identifiers: bus_type bus_notifier_event
+
+.. kernel-doc:: include/linux/device/class.h
+   :identifiers: class
+
+.. kernel-doc:: include/linux/device/driver.h
+   :identifiers: probe_type device_driver
+
 Device Drivers Base
 -------------------
 
 .. kernel-doc:: drivers/base/init.c
    :internal:
+
+.. kernel-doc:: include/linux/device/driver.h
+   :no-identifiers: probe_type device_driver
 
 .. kernel-doc:: drivers/base/driver.c
    :export:
···
 
 .. kernel-doc:: drivers/base/syscore.c
    :export:
+
+.. kernel-doc:: include/linux/device/class.h
+   :no-identifiers: class
 
 .. kernel-doc:: drivers/base/class.c
    :export:
···
 
 .. kernel-doc:: drivers/base/platform.c
    :export:
+
+.. kernel-doc:: include/linux/device/bus.h
+   :no-identifiers: bus_type bus_notifier_event
 
 .. kernel-doc:: drivers/base/bus.c
    :export: