sh: Fix compile warning

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/include/asm-sh/pci.h b/include/asm-sh/pci.h
index bc59491..040c532 100644
--- a/include/asm-sh/pci.h
+++ b/include/asm-sh/pci.h
@@ -36,6 +36,7 @@
 #error "Not support PCI."
 #endif
 
+int pci_sh4_init(struct pci_controller *hose);
 /* PCI dword read for sh4 */
 int pci_sh4_read_config_dword(struct pci_controller *hose,
 		pci_dev_t dev, int offset, u32 *value);