rockchip: rk3288: pinctrl: support more pins

The rgmii_pins node in rk3288.dtsi configures 15 pins. Increase the size
of the cell array to accomedate that, otherwise only the first 10 get
configured.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/pinctrl/rockchip/pinctrl_rk3288.c b/drivers/pinctrl/rockchip/pinctrl_rk3288.c
index 7c769bd..1fa1daa 100644
--- a/drivers/pinctrl/rockchip/pinctrl_rk3288.c
+++ b/drivers/pinctrl/rockchip/pinctrl_rk3288.c
@@ -623,7 +623,7 @@
 {
 	const void *blob = gd->fdt_blob;
 	int pcfg_node, ret, flags, count, i;
-	u32 cell[40], *ptr;
+	u32 cell[60], *ptr;
 
 	debug("%s: %s %s\n", __func__, dev->name, config->name);
 	ret = fdtdec_get_int_array_count(blob, config->of_offset,