staging: fsl-mc: section mismatch bug fix

WARNING: drivers/staging/built-in.o(.init.text+0xdc): Section mismatch in reference from the function fsl_mc_bus_driver_init() to the function .exit.text:dprc_driver_exit()
The function __init fsl_mc_bus_driver_init() references
a function __exit dprc_driver_exit().
This is often seen when error handling in the init function
uses functionality in the exit path.
The fix is often to remove the __exit annotation of
dprc_driver_exit() so it may be used outside an exit section.
Signed-off-by: Lijun Pan <Lijun.Pan@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fsl-mc/bus/dprc-driver.c

@@ -482,7 +482,7 @@ int __init dprc_driver_init(void)
 	return fsl_mc_driver_register(&dprc_driver);
 }
 
-void __exit dprc_driver_exit(void)
+void dprc_driver_exit(void)
 {
 	fsl_mc_driver_unregister(&dprc_driver);
 }

drivers/staging/fsl-mc/include/mc-private.h

@@ -103,7 +103,7 @@ int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev);
 
 int __init dprc_driver_init(void);
 
-void __exit dprc_driver_exit(void);
+void dprc_driver_exit(void);
 
 int __init fsl_mc_allocator_driver_init(void);