i.MX: iomux: input pad array can be const

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
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 da093fb..08fad78 100644
--- a/arch/arm/imx-common/iomux-v3.c
+++ b/arch/arm/imx-common/iomux-v3.c
@@ -54,9 +54,10 @@
 	return 0;
 }
 
-int imx_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t *pad_list, unsigned count)
+int imx_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t const *pad_list,
+				     unsigned count)
 {
-	iomux_v3_cfg_t *p = pad_list;
+	iomux_v3_cfg_t const *p = pad_list;
 	int i;
 	int ret;