fpga: clarify that unregister functions also free

The following functions also free the struct.  Add that
fact to the function documentation.
 - fpga_mgr_free
 - fpga_bridge_free
 - fpga_region_free
Signed-off-by: NAlan Tull <atull@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/fpga/fpga-bridge.c

@@ -412,7 +412,7 @@ int fpga_bridge_register(struct fpga_bridge *bridge)
 EXPORT_SYMBOL_GPL(fpga_bridge_register);
 
 /**
- * fpga_bridge_unregister - unregister a fpga bridge driver
+ * fpga_bridge_unregister - unregister and free a fpga bridge
  * @bridge:	FPGA bridge struct created by fpga_bridge_create
  */
 void fpga_bridge_unregister(struct fpga_bridge *bridge)

drivers/fpga/fpga-mgr.c

@@ -633,7 +633,7 @@ int fpga_mgr_register(struct fpga_manager *mgr)
 EXPORT_SYMBOL_GPL(fpga_mgr_register);
 
 /**
- * fpga_mgr_unregister - unregister a FPGA manager
+ * fpga_mgr_unregister - unregister and free a FPGA manager
  * @mgr:	fpga manager struct
  */
 void fpga_mgr_unregister(struct fpga_manager *mgr)

drivers/fpga/fpga-region.c

@@ -232,7 +232,7 @@ int fpga_region_register(struct fpga_region *region)
 EXPORT_SYMBOL_GPL(fpga_region_register);
 
 /**
- * fpga_region_unregister - unregister a FPGA region
+ * fpga_region_unregister - unregister and free a FPGA region
  * @region: FPGA region
  */
 void fpga_region_unregister(struct fpga_region *region)