powerpc/85xx: Cleanup extern in corenet_ds board code

Move extern of pci_of_setup() into corenet_ds.h

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/board/freescale/corenet_ds/corenet_ds.c b/board/freescale/corenet_ds/corenet_ds.c
index a03fdfd..b1eecc4 100644
--- a/board/freescale/corenet_ds/corenet_ds.c
+++ b/board/freescale/corenet_ds/corenet_ds.c
@@ -34,8 +34,6 @@
 #include <asm/fsl_liodn.h>
 #include <fm_eth.h>
 
-extern void pci_of_setup(void *blob, bd_t *bd);
-
 #include "../common/ngpixis.h"
 #include "corenet_ds.h"
 
diff --git a/board/freescale/corenet_ds/corenet_ds.h b/board/freescale/corenet_ds/corenet_ds.h
index 425c6aa..9cdd47d 100644
--- a/board/freescale/corenet_ds/corenet_ds.h
+++ b/board/freescale/corenet_ds/corenet_ds.h
@@ -21,5 +21,6 @@
 #define __CORENET_DS_H__
 
 void fdt_fixup_board_enet(void *blob);
+void pci_of_setup(void *blob, bd_t *bd);
 
 #endif