documentation: fpga: add bridge document to driver-api

FPGA Bridge

===========

API to implement a new FPGA bridge

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. kernel-doc:: include/linux/fpga/fpga-bridge.h

   :functions: fpga_bridge

.. kernel-doc:: include/linux/fpga/fpga-bridge.h

   :functions: fpga_bridge_ops

.. kernel-doc:: drivers/fpga/fpga-bridge.c

   :functions: fpga_bridge_create

.. kernel-doc:: drivers/fpga/fpga-bridge.c

   :functions: fpga_bridge_free

.. kernel-doc:: drivers/fpga/fpga-bridge.c

   :functions: fpga_bridge_register

.. kernel-doc:: drivers/fpga/fpga-bridge.c

   :functions: fpga_bridge_unregister

API to control an FPGA bridge

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

You probably won't need these directly.  FPGA regions should handle this.

.. kernel-doc:: drivers/fpga/fpga-bridge.c

   :functions: of_fpga_bridge_get

.. kernel-doc:: drivers/fpga/fpga-bridge.c

   :functions: fpga_bridge_get

.. kernel-doc:: drivers/fpga/fpga-bridge.c

   :functions: fpga_bridge_put

.. kernel-doc:: drivers/fpga/fpga-bridge.c

   :functions: fpga_bridge_get_to_list

.. kernel-doc:: drivers/fpga/fpga-bridge.c

   :functions: of_fpga_bridge_get_to_list

.. kernel-doc:: drivers/fpga/fpga-bridge.c

   :functions: fpga_bridge_enable

.. kernel-doc:: drivers/fpga/fpga-bridge.c

   :functions: fpga_bridge_disable

   intro

   intro

   fpga-mgr

   fpga-mgr

   fpga-bridge