[ARM] Kirkwood: instantiate the orion_spi driver in the platform code

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
diff --git a/arch/arm/mach-kirkwood/common.h b/arch/arm/mach-kirkwood/common.h
index 6f94cda..69cd113 100644
--- a/arch/arm/mach-kirkwood/common.h
+++ b/arch/arm/mach-kirkwood/common.h
@@ -33,6 +33,7 @@
 void kirkwood_pcie_init(void);
 void kirkwood_rtc_init(void);
 void kirkwood_sata_init(struct mv_sata_platform_data *sata_data);
+void kirkwood_spi_init(void);
 void kirkwood_uart0_init(void);
 void kirkwood_uart1_init(void);
 void kirkwood_xor0_init(void);