rockchip: pine64: pinebook-pro: Migrate to use IO-domain driver

Switch to use the IO-domain driver to configure IO-domain based on
device tree instead of a setup_iodomain() function.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/configs/pinebook-pro-rk3399_defconfig b/configs/pinebook-pro-rk3399_defconfig
index 57e614c..23ac24a 100644
--- a/configs/pinebook-pro-rk3399_defconfig
+++ b/configs/pinebook-pro-rk3399_defconfig
@@ -49,6 +49,7 @@
 CONFIG_SYS_I2C_ROCKCHIP=y
 CONFIG_LED=y
 CONFIG_LED_GPIO=y
+CONFIG_ROCKCHIP_IODOMAIN=y
 CONFIG_MMC_IO_VOLTAGE=y
 CONFIG_SPL_MMC_IO_VOLTAGE=y
 CONFIG_MMC_UHS_SUPPORT=y