vf610: fix build due to missing sys_proto.h

commit 67a04ab3ab8522a3a34491853e46105317580df5
fix the build for MX25. The same error
happens for VF610 SOC.

Signed-off-by: Stefano Babic <sbabic@denx.de>
diff --git a/arch/arm/imx-common/iomux-v3.c b/arch/arm/imx-common/iomux-v3.c
index c090b30..22cd11a 100644
--- a/arch/arm/imx-common/iomux-v3.c
+++ b/arch/arm/imx-common/iomux-v3.c
@@ -11,7 +11,7 @@
 #include <common.h>
 #include <asm/io.h>
 #include <asm/arch/imx-regs.h>
-#ifndef CONFIG_MX25
+#if !defined(CONFIG_MX25) && !defined(CONFIG_VF610)
 #include <asm/arch/sys_proto.h>
 #endif
 #include <asm/imx-common/iomux-v3.h>