rockchip: pinctrl: dm: convert fdt_get to dev_read

With the new dev_read functions available, we can convert the rockchip
architecture-specific drivers and common drivers used by these devices
over to the dev_read family of calls.

This change covers the pinctrl drivers for the Rockchip devices.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/pinctrl/rockchip/pinctrl_rk3188.c b/drivers/pinctrl/rockchip/pinctrl_rk3188.c
index 65c1f66..692d8e2 100644
--- a/drivers/pinctrl/rockchip/pinctrl_rk3188.c
+++ b/drivers/pinctrl/rockchip/pinctrl_rk3188.c
@@ -370,8 +370,7 @@
 	u32 cell[3];
 	int ret;
 
-	ret = fdtdec_get_int_array(gd->fdt_blob, dev_of_offset(periph),
-				   "interrupts", cell, ARRAY_SIZE(cell));
+	ret = dev_read_u32_array(periph, "interrupts", cell, ARRAY_SIZE(cell));
 	if (ret < 0)
 		return -EINVAL;