configs: rockchip: enable gpio-leds driver for Radxa boards

Basically, Radxa's boards are intended to turn LEDs on at U-Boot.
enable gpio-leds driver and led command.

Signed-off-by: FUKAUMI Naoki <naoki@radxa.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/configs/rock5a-rk3588s_defconfig b/configs/rock5a-rk3588s_defconfig
index 9ffe917..9618d59 100644
--- a/configs/rock5a-rk3588s_defconfig
+++ b/configs/rock5a-rk3588s_defconfig
@@ -39,6 +39,8 @@
 CONFIG_SPL_CLK=y
 CONFIG_ROCKCHIP_GPIO=y
 CONFIG_SYS_I2C_ROCKCHIP=y
+CONFIG_LED=y
+CONFIG_LED_GPIO=y
 CONFIG_MISC=y
 CONFIG_SUPPORT_EMMC_RPMB=y
 CONFIG_MMC_DW=y