xilinx_zynq: add USB controllers

Add the two usb controllers in Zynq.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
diff --git a/hw/xilinx_zynq.c b/hw/xilinx_zynq.c
index 0026235..1f12a3d 100644
--- a/hw/xilinx_zynq.c
+++ b/hw/xilinx_zynq.c
@@ -166,6 +166,9 @@
     zynq_init_spi_flashes(0xE0007000, pic[81-IRQ_OFFSET], false);
     zynq_init_spi_flashes(0xE000D000, pic[51-IRQ_OFFSET], true);
 
+    sysbus_create_simple("xlnx,ps7-usb", 0xE0002000, pic[53-IRQ_OFFSET]);
+    sysbus_create_simple("xlnx,ps7-usb", 0xE0003000, pic[75-IRQ_OFFSET]);
+
     sysbus_create_simple("cadence_uart", 0xE0000000, pic[59-IRQ_OFFSET]);
     sysbus_create_simple("cadence_uart", 0xE0001000, pic[82-IRQ_OFFSET]);