staging: greybus: Fix coding style issue for column width

checkpatch.pl line over 80 characters so fix the formatting
for coding style compliance.

Signed-off-by: Deb McLemore <debmc@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/greybus/spilib.h

@@ -18,7 +18,8 @@ struct spilib_ops {
 	void (*unprepare_transfer_hardware)(struct device *dev);
 };
 
-int gb_spilib_master_init(struct gb_connection *connection, struct device *dev, struct spilib_ops *ops);
+int gb_spilib_master_init(struct gb_connection *connection,
+			  struct device *dev, struct spilib_ops *ops);
 void gb_spilib_master_exit(struct gb_connection *connection);
 
 #endif /* __SPILIB_H */