staging: fsl-mc: remove unneeded forward declarations

Remove unneeded and duplicated forward declarations.
Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

@@ -24,10 +24,6 @@ struct msi_domain_info;
  */
 #define FSL_MC_IRQ_POOL_MAX_TOTAL_IRQS	256
 
-struct device_node;
-struct irq_domain;
-struct msi_domain_info;
-
 /**
  * struct fsl_mc_resource_pool - Pool of MC resources of a given
  * type

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

@@ -21,7 +21,6 @@
 
 struct fsl_mc_device;
 struct fsl_mc_io;
-struct fsl_mc_bus;
 
 /**
  * struct fsl_mc_driver - MC object device driver object