ARM: zynq: Extend microzed board support

Add missing DT nodes and enable USB.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Nathan Rossi <nathan@nathanrossi.com>
diff --git a/include/configs/zynq_microzed.h b/include/configs/zynq_microzed.h
index e66088d..ec7bb1c 100644
--- a/include/configs/zynq_microzed.h
+++ b/include/configs/zynq_microzed.h
@@ -12,6 +12,8 @@
 
 #define CONFIG_SYS_NO_FLASH
 
+#define CONFIG_ZYNQ_USB
+
 #include <configs/zynq-common.h>
 
 #endif /* __CONFIG_ZYNQ_MICROZED_H */