common: Move pci_target_init() to PPC header

Only one boards needs this definition. Move it to an arch-specific header.

Signed-off-by: Simon Glass <sjg@chromium.org>

arch/powerpc/include/asm/4xx_pci.h

@@ -56,5 +56,6 @@ int pci_arbiter_enabled(void);
 int __pci_pre_init(struct pci_controller *hose);
 void __pci_target_init(struct pci_controller *hose);
 void __pci_master_init(struct pci_controller *hose);
+void pci_target_init(struct pci_controller *);
 
 #endif

include/common.h

@@ -457,9 +457,6 @@ void	pci_init      (void);
 void	pci_init_board(void);
 
 #if defined(CONFIG_PCI) && (defined(CONFIG_440) || defined(CONFIG_405EX))
-#   if defined(CONFIG_SYS_PCI_TARGET_INIT)
-	void	pci_target_init	     (struct pci_controller *);
-#   endif
 #   if defined(CONFIG_SYS_PCI_MASTER_INIT)
 	void	pci_master_init	     (struct pci_controller *);
 #   endif