spl: sdp: call board_usb_init at spl_sdp_load_image

Need initialize UDC before run sdp download

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/common/spl/spl_sdp.c b/common/spl/spl_sdp.c
index 806bf13..a54c747 100644
--- a/common/spl/spl_sdp.c
+++ b/common/spl/spl_sdp.c
@@ -16,6 +16,8 @@
 	int ret;
 	const int controller_index = 0;
 
+	board_usb_init(0, USB_INIT_DEVICE);
+
 	g_dnl_clear_detach();
 	ret = g_dnl_register("usb_dnl_sdp");
 	if (ret) {