h2200: Add USB CDC ethernet support

Add support for ethernet over USB which can be used for e.g. booting
process. It works with tftp and dhcp clients code.

Signed-off-by: Lukasz Dalek <luk0104@gmail.com>
diff --git a/board/h2200/h2200.c b/board/h2200/h2200.c
index 3076306..720b06e 100644
--- a/board/h2200/h2200.c
+++ b/board/h2200/h2200.c
@@ -22,9 +22,16 @@
 #include <asm/arch/pxa.h>
 #include <asm/arch/pxa-regs.h>
 #include <asm/io.h>
+#include <usb.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
+int board_eth_init(bd_t *bis)
+{
+	usb_eth_initialize(bis);
+	return 0;
+}
+
 int board_init(void)
 {
 	/* We have RAM, disable cache */
@@ -36,6 +43,10 @@
 	/* adress of boot parameters */
 	gd->bd->bi_boot_params = 0xa0000100;
 
+	/* Let host see that device is disconnected */
+	udc_disconnect();
+	mdelay(500);
+
 	return 0;
 }