xilinx: Enable led support for some boards

Enable led support for boards which have "gpio-leds" node.
And also for microblaze which is converted to DM_GPIO now.
Tested on zcu100.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
diff --git a/configs/xilinx_zynqmp_zcu102_revA_defconfig b/configs/xilinx_zynqmp_zcu102_revA_defconfig
index 49a9a4f..09ae9e8 100644
--- a/configs/xilinx_zynqmp_zcu102_revA_defconfig
+++ b/configs/xilinx_zynqmp_zcu102_revA_defconfig
@@ -63,6 +63,8 @@
 CONFIG_SYS_I2C_ZYNQ=y
 CONFIG_ZYNQ_I2C0=y
 CONFIG_ZYNQ_I2C1=y
+CONFIG_LED=y
+CONFIG_LED_GPIO=y
 CONFIG_MISC=y
 CONFIG_ZYNQ_GEM_I2C_MAC_OFFSET=0x20
 CONFIG_DM_MMC=y